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These are tables of congressional delegations from Pennsylvania to the United States House of Representatives and the United States Senate.
The current dean of the Pennsylvania delegation is Representative Glenn Thompson, having served in the House since 2009.
United States House of Representatives
Current members
List of members, their terms in office, district boundaries, and the district political ratings according to the CPVI. The delegation has 17 members, with 10 Republicans and 7 Democrats.
{| class="wikitable sortable"
|-
! District
! CPVI
! Representative<br/>(Hometown)
! Party
! Time in office
! District map
|-
! 1st
| | D+1
| 100px<br/>Brian Fitzpatrick<br/>(Levittown)
| | Republican
| since January 3, 2017
|
|-
! 2nd
| | D+19
| 100px<br/>Brendan Boyle<br/>(Philadelphia)
| | Democratic
| since January 3, 2015
|
|-
! 3rd
| | D+40
| 100px<br/>Dwight Evans<br/>(Philadelphia)
| | Democratic
| since November 14, 2016
|
|-
! 4th
| | D+8
| 100px<br/>Madeleine Dean<br/>(Jenkintown)
| | Democratic
| since January 3, 2019
|
|-
! 5th
| | D+15
| 100px<br/>Mary Gay Scanlon<br/>(Swarthmore)
| | Democratic
| since November 13, 2018
|
|-
! 6th
| | D+6
| 100px<br/>Chrissy Houlahan<br/>(Devon)
| | Democratic
| since January 3, 2019
|
|-
! 7th
| | R+1
| 100px<br/>Ryan Mackenzie<br/>(Lower Macungie Township)
| | Republican
| since January 3, 2025
|
|-
! 8th
| | R+4
| 100px<br/>Rob Bresnahan<br/>(Dallas Township)
| | Republican
| since January 3, 2025
|
|-
! 9th
| | R+19
| 100px<br/>Dan Meuser<br/>(Dallas)
| | Republican
| since January 3, 2019
|
|-
! 10th
| | R+3
| 100px<br/>Scott Perry<br/>(Dillsburg)
| | Republican
| since January 3, 2013
|
|-
! 11th
| | R+11
| 100px<br/>Lloyd Smucker<br/>(Lancaster)
| | Republican
| since January 3, 2017
|
|-
! 12th
| | D+10
| 100px<br/>Summer Lee<br/>(Swissvale)
| | Democratic
| since January 3, 2023
|
|-
! 13th
| | R+23
| 100px<br/>John Joyce<br/>(Hollidaysburg)
| | Republican
| since January 3, 2019
|
|-
! 14th
| | R+17
| 100px<br/>Guy Reschenthaler<br/>(Peters Township)
| | Republican
| since January 3, 2019
|
|-
! 15th
| | R+19
| 100px<br/>Glenn Thompson<br/>(Howard)
| | Republican
| since January 3, 2009
|
|-
! 16th
| | R+11
| 100px<br/>Mike Kelly<br/>(Butler)
| | Republican
| since January 3, 2011
|
|-
! 17th
| | D+3
| 100px<br/>Chris Deluzio<br/>(Aspinwall)
| | Democratic
| since January 3, 2023
|
|}
1789–1793: 8 seats
For the first two Congresses, Pennsylvania had eight seats. In the First Congress, Representatives were selected at-large on a general ticket. Districts were used in the Second Congress.
{| class=wikitable style="text-align:center"
! Congress
! colspan=8 | on a general ticket
|- style="height:3em"
| <br/>(1789–1791)
| | Thomas<br/>Fitzsimmons <small>(PA)</small>
| | Frederick<br/>Muhlenberg <small>(PA)</small>
| | George Clymer <small>(PA)</small>
| | Daniel Hiester <small>(AA)</small>
| | Thomas Scott <small>(PA)</small>
| | Peter<br/>Muhlenberg <small>(AA)</small>
| | Thomas Hartley <small>(PA)</small>
| | Henry Wynkoop <small>(PA)</small>
|-
! Congress
!
!
!
!
!
!
!
!
|- style="height:3em"
| <br/>(1791–1793)
| | Thomas<br/>Fitzsimmons <small>(PA)</small>
| | Frederick<br/>Muhlenberg <small>(AA)</small>
| | Israel Jacobs <small>(PA)</small>
| | Daniel Hiester <small>(AA)</small>
| | John W. Kittera <small>(PA)</small>
| | Andrew Gregg <small>(AA)</small>
| | Thomas Hartley <small>(PA)</small>
| | William Findley <small>(AA)</small>
|}
1793–1803: 13 seats
Pennsylvania had thirteen seats. For the third Congress representatives were selected at-large on a general ticket. After that, districts were created.
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! Congress
! colspan=13 | on a general ticket
|- style="height:3em"
| <br/>(1793–1795)
| | William<br/>Mont­gomery<br/><small>(AA)</small>
| | Frederick<br/>Muhlen­berg<br/><small>(AA)</small>
| | Thomas<br/>Fitzsimons<br/><small>(PA)</small>
| | Thomas<br/>Scott <small>(PA)</small>
| | James<br/>Armstrong<br/><small>(PA)</small>
| | Daniel<br/>Hiester <small>(AA)</small>
| | John<br/>Smilie <small>(AA)</small>
| | John W.<br/>Kittera <small>(PA)</small>
| | Thomas<br/>Hartley <small>(PA)</small>
| | Andrew<br/>Gregg <small>(AA)</small>
| | Peter<br/>Muhlen­berg<br/><small>(AA)</small>
| | William<br/>Findley <small>(AA)</small>
| | William<br/>Irvine <small>(AA)</small>
|-
! Cong­ress
!
!
!
! colspan=2 |
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=2 | <br/>(1795–1797)
| rowspan=3 | John<br/>Swanwick <small>(DR)</small>
| rowspan=2 | Frederick<br/>Muhlen­berg <small>(DR)</small>
| rowspan=5 | Richard<br/>Thomas <small>(F)</small>
| rowspan=2 | Samuel<br/>Sitgreaves <small>(F)</small>
| rowspan=2 | John<br/>Richards <small>(DR)</small>
| | Daniel<br/>Hiester <small>(DR)</small>
| rowspan=2 | Samuel<br/>Maclay <small>(DR)</small>
| rowspan=5 | John W.<br/>Kittera <small>(F)</small>
| rowspan=5 | Thomas<br/>Hartley <small>(F)</small>
| rowspan=6 | Andrew<br/>Gregg <small>(DR)</small>
| rowspan=4 | David<br/>Bard <small>(DR)</small>
| rowspan=4 | William<br/>Findley <small>(DR)</small>
| rowspan=5 | Albert<br/>Gallatin <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | George<br/>Ege <small>(F)</small>
|- style="height:3em"
| rowspan=2 | <br/>(1797–1799)
| rowspan=2 | Blair<br/>McClenachan <small>(DR)</small>
| rowspan=2 | John<br/>Chapman <small>(F)</small>
| rowspan=4 | Robert<br/>Brown <small>(DR)</small>
| rowspan=4 | John A.<br/>Hanna <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | Robert<br/>Waln <small>(F)</small>
| rowspan=3 | Joseph<br/>Hiester <small>(DR)</small>
|- style="height:3em"
| <br/>(1799–1801)
| rowspan=2 | Michael<br/>Leib <small>(DR)</small>
| | Peter<br/>Muhlen­berg <small>(DR)</small>
| rowspan=2 | Henry<br/>Woods <small>(F)</small>
| rowspan=2 | John<br/>Smilie <small>(DR)</small>
|- style="height:3em"
| <br/>(1801–1803)
| | William<br/>Jones <small>(DR)</small>
| | Joseph<br/>Hemphill <small>(F)</small>
| | Isaac Van<br/>Horne <small>(DR)</small>
| | Thomas<br/>Boude <small>(F)</small>
| | John<br/>Stewart <small>(DR)</small>
| | William<br/>Hoge <small>(DR)</small>
|}
</div>
1803–1813: 18 seats
There were eighteen seats, apportioned among eleven districts. Districts 1–3 each had three seats elected on a general ticket. District 4 had two such seats. Districts 5–11 each had one seat.
{| class=wikitable style="text-align:center"
! rowspan=2 | Congress
! colspan="18" | District
|-
! colspan=3 |
! colspan=3 |
! colspan=3 |
! colspan="2" |
!
!
!
!
!
!
!
|- style="height:2em"
| rowspan=2 | <br/>(1803–1805)
| rowspan=5 | Joseph<br/>Clay<br/><small>(DR)</small>
| rowspan=6 | Jacob<br/>Richards<br/><small>(DR)</small>
| rowspan=3 | Michael<br/>Leib<br/><small>(DR)</small>
| rowspan=10 | Robert<br/>Brown<br/><small>(DR)</small>
| rowspan=4 | Frederick<br/>Conrad<br/><small>(DR)</small>
| rowspan=2 | Isaac<br/>Van Horne<br/><small>(DR)</small>
| rowspan=4 | Isaac<br/>Anderson<br/><small>(DR)</small>
| rowspan=2 | Joseph<br/>Hiester<br/><small>(DR)</small>
| rowspan=4 | John<br/>Whitehill<br/><small>(DR)</small>
| rowspan=3 | John A.<br/>Hanna<br/><small>(DR)</small>
| rowspan="4" | David<br/>Bard<br/><small>(DR)</small>
| rowspan="4" | Andrew<br/>Gregg<br/><small>(DR)</small>
| rowspan="2" | John<br/>Stewart<br/><small>(DR)</small>
| rowspan="8" | John<br/>Rea<br/><small>(DR)</small>
| rowspan="10" | William<br/>Findley<br/><small>(DR)</small>
| rowspan="9" | John<br/>Smilie<br/><small>(DR)</small>
| | William<br/>Hoge <small>(DR)</small>
| rowspan="2" | Jean B. C.<br/>Lucas <small>(DR)</small>
|- style="height:2em"
| | John Hoge <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | <br/>(1805–1807)
| rowspan=4 | John<br/>Pugh<br/><small>(DR)</small>
| rowspan=2 | Christian<br/>Lower <small>(DR)</small>
| rowspan=4 | James<br/>Kelly<br/><small>(F)</small>
| rowspan=2 | John<br/>Hamilton <small>(DR)</small>
| rowspan=6 | Samuel<br/>Smith<br/><small>(DR)</small>
|- style="height:2em"
| rowspan=5 | John<br/>Porter<br/><small>(DR)</small>
| rowspan=7 | Robert<br/>Whitehill<br/><small>(DR)</small>
|- style="height:2em"
| rowspan=2 | <br/>(1807–1809)
| rowspan=4 | William<br/>Milnor<br/><small>(F)</small>
| rowspan=4 | Robert<br/>Jenkins<br/><small>(F)</small>
| rowspan=2 | Matthias<br/>Richards<br/><small>(DR Quid)</small>
| rowspan=2 | John<br/>Hiester<br/><small>(DR Quid)</small>
| rowspan="2" | David<br/>Bard<br/><small>(DR Quid)</small>
| rowspan=2 | Daniel<br/>Mont­gomery<br/><small>(DR)</small>
| rowspan=2 | William<br/>Hoge <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | Benjamin<br/>Say <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | <br/>(1809–1811)
| rowspan=4 | William<br/>Anderson<br/><small>(DR)</small>
| rowspan=2 | John<br/>Ross <small>(DR)</small>
| rowspan=2 | Matthias<br/>Richards<br/><small>(DR)</small>
| rowspan=2 | Daniel<br/>Hiester <small>(DR)</small>
| rowspan="4" | David<br/>Bard<br/><small>(DR)</small>
| rowspan=4 | George<br/>Smith<br/><small>(DR)</small>
| rowspan=4 | William<br/>Crawford<br/><small>(DR)</small>
| rowspan=4 | Aaron<br/>Lyle<br/><small>(DR)</small>
|- style="height:2em"
| rowspan=3 | Adam<br/>Seybert<br/><small>(DR)</small>
|- style="height:2em"
| rowspan=2 | <br/>(1811–1813)
| rowspan=2 | James<br/>Milnor <small>(F)</small>
| rowspan=2 | Jonathan<br/>Roberts<br/><small>(DR)</small>
| rowspan=2 | William<br/>Rodman<br/><small>(DR)</small>
| rowspan=2 | Roger<br/>Davis <small>(DR)</small>
| rowspan=2 | John M.<br/>Hyneman<br/><small>(DR)</small>
| rowspan=2 | Joseph<br/>Lefever <small>(DR)</small>
| rowspan=2 | William<br/>Piper<br/><small>(DR)</small>
| rowspan=2 | Abner<br/>Lacock<br/><small>(DR)</small>
|- style="height:2em"
| | Isaac<br/>Griffin <small>(DR)</small>
|}
1813–1823: 23 seats
There were 15 districts. The 1st district had four seats elected on a general ticket. The 2nd, 3rd, 5th, 6th and 10th each had two seats elected on a general ticket. The rest of the districts each had one seat.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.06em;"
! Congress
|- style="white-space:nowrap; height:7.24em;"
|<br/>(1813–1815)
|- style="white-space:nowrap; height:5.64em"
| <br/>(1815–1817)
|- style="white-space:nowrap; height:5.64em"
|<br/>(1817–1819)
|- style="white-space:nowrap; height:7.22em"
|<br/>(1819–1821)
|- style="white-space:nowrap; height:7.2em"
|<br/>(1821–1823)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
|- style="height:2em"
! colspan="23" | District
! rowspan=2 | Cong­ress
|- style="height:2em"
! colspan=4 |
! colspan=2 |
! colspan=2 |
!
! colspan="2" |
! colspan=2 |
!
!
!
! colspan=2 |
!
!
!
!
!
|- style="height:2em"
| rowspan=2 | Adam<br/>Seybert<br/><small>(DR)</small>
| rowspan=2 | John<br/>Conard<br/><small>(DR)</small>
| rowspan=2 | William<br/>Anderson<br/><small>(DR)</small>
| rowspan=2 | Charles<br/>Jared<br/>Ingersoll<br/><small>(DR)</small>
| | Jonathan<br/>Roberts <small>(DR)</small>
| rowspan=2 | Roger<br/>Davis<br/><small>(DR)</small>
| | John<br/>Gloninger <small>(F)</small>
| | James<br/>Whitehill <small>(DR)</small>
| rowspan=4 | Hugh<br/>Glasgow <small>(DR)</small>
| rowspan=4 | William<br/>Crawford<br/><small>(DR)</small>
| | Robert<br/>Whitehill <small>(DR)</small>
| rowspan="5" | Samuel D.<br/>Ingham <small>(DR)</small>
| rowspan="2" | Robert<br/>Brown<br/><small>(DR)</small>
| | John M.<br/>Hyneman <small>(DR)</small>
| rowspan="4" | William<br/>Piper<br/><small>(DR)</small>
| rowspan="2" | David<br/>Bard <small>(DR)</small>
| rowspan="4" | Jared<br/>Irwin <small>(DR)</small>
| rowspan="2" | Isaac<br/>Smith<br/><small>(DR)</small>
| rowspan="4" | William<br/>Findley<br/><small>(DR)</small>
| rowspan="4" | Aaron<br/>Lyle <small>(DR)</small>
| rowspan="4" | Isaac<br/>Griffin<br/><small>(DR)</small>
| rowspan="2" | Adamson<br/>Tannehill<br/><small>(DR)</small>
| rowspan="4" | Thomas<br/>Wilson<br/><small>(DR)</small>
| rowspan=2 | <br/>(1813–1815)
|- style="height:2em"
| | Samuel<br/>Hender­son <small>(F)</small>
| | Edward<br/>Crouch <small>(DR)</small>
| | Amos<br/>Slaymaker <small>(F)</small>
| | John<br/>Rea <small>(DR)</small>
| | Daniel<br/>Udree <small>(DR)</small>
|- style="height:2em"
| rowspan=4 | Joseph<br/>Hopkinson<br/><small>(F)</small>
| rowspan=2 | William<br/>Milnor <small>(F)</small>
| rowspan=2 | Thomas<br/>Smith <small>(F)</small>
| | Jonathan<br/>Williams <small>(DR)</small>
| rowspan=2 | William<br/>Darlington<br/><small>(DR)</small>
| rowspan=2 | John<br/>Hahn<br/><small>(DR)</small>
| rowspan=4 | John<br/>Whiteside<br/><small>(DR)</small>
| rowspan=6 | James M.<br/>Wallace <small>(DR)</small>
| rowspan=4 | William<br/>Maclay <small>(DR)</small>
| rowspan=3 | John<br/>Ross<br/><small>(DR)</small>
| rowspan=5 | Joseph<br/>Hiester <small>(DR)</small>
| | Thomas<br/>Burnside <small>(DR)</small>
| rowspan=4 | William<br/>Wilson<br/><small>(DR)</small>
| rowspan=2 | John<br/>Woods<br/><small>(F)</small>
| rowspan=2 | <br/>(1815–1817)
|- style="height:2em"
| rowspan=7 | John<br/>Sergeant <small>(F)</small>
| rowspan=5 | William<br/>Plunkett<br/>Maclay<br/><small>(DR)</small>
|- style="height:2em"
| rowspan=2 | Adam<br/>Seybert<br/><small>(DR)</small>
| rowspan=2 | William<br/>Anderson<br/><small>(DR)</small>
| rowspan=2 | Isaac<br/>Darlington<br/><small>(F)</small>
| rowspan=2 | Levi<br/>Pawling<br/><small>(F)</small>
| | Jacob<br/>Spangler <small>(DR)</small>
| rowspan=4 | Andrew<br/>Boden <small>(DR)</small>
| rowspan=2 | Alexander<br/>Ogle<br/><small>(DR)</small>
| | David<br/>Scott <small>(DR)</small>
| rowspan=4 | David<br/>Marchand<br/><small>(DR)</small>
| rowspan=6 | Thomas<br/>Patterson<br/><small>(DR)</small>
| rowspan=4 | Christian<br/>Tarr<br/><small>(DR)</small>
| rowspan=5 | Henry<br/>Baldwin<br/><small>(DR)</small>
| rowspan=4 | Robert<br/>Moore<br/><small>(DR)</small>
| rowspan=2 | <br/>(1817–1819)
|- style="height:2em"
| rowspan=3 | Jacob<br/>Hostetter<br/><small>(DR)</small>
| rowspan=4 | Samuel<br/>Moore <small>(DR)</small>
| rowspan=5 | Thomas<br/>J.<br/>Rogers<br/><small>(DR)</small>
| rowspan=3 | John<br/>Murray <small>(DR)</small>
|- style="height:2em"
| rowspan=4 | Samuel<br/>Edwards<br/><small>(F)</small>
| rowspan=2 | Thomas<br/>Forrest <small>(F)</small>
| rowspan=4 | Joseph<br/>Hemphill<br/><small>(F)</small>
| rowspan=4 | William<br/>Darlington<br/><small>(DR)</small>
| rowspan=4 | Samuel<br/>Gross<br/><small>(DR)</small>
| rowspan=2 | Jacob<br/>Hibshman<br/><small>(DR)</small>
| | David<br/>Fullerton <small>(DR)</small>
| rowspan=2 | Robert<br/>Philson<br/><small>(DR)</small>
| rowspan=4 | George<br/>Denison<br/><small>(DR)</small>
| rowspan=2 | <br/>(1819–1821)
|- style="height:2em"
| | Thomas G.<br/>McCullough <small>(F)</small>
| | Daniel<br/>Udree <small>(DR)</small>
|- style="height:2em"
| | William<br/>Milnor <small>(F)</small>
| rowspan=2 | James<br/>Buchanan<br/><small>(F)</small>
| rowspan=2 | John<br/>Phillips <small>(F)</small>
| rowspan=2 | James S.<br/>Mitchell <small>(DR)</small>
| | James<br/>Duncan <small>(DR)</small>
| rowspan=2 | James<br/>McSherry <small>(F)</small>
| | Ludwig<br/>Worman <small>(F)</small>
| rowspan=2 | John<br/>Tod <small>(DR)</small>
| rowspan=2 | John<br/>Brown <small>(DR)</small>
| | William Cox<br/>Ellis <small>(DR)</small>
| rowspan=2 | George<br/>Plumer<br/><small>(DR)</small>
| rowspan=2 | Andrew<br/>Stewart<br/><small>(DR)</small>
| rowspan=2 | Patrick<br/>Farrelly<br/><small>(DR)</small>
| rowspan=2 | <br/>(1821–1823)
|- style="height:2em"
| | Thomas<br/>Forrest <small>(F)</small>
| | John<br/>Findlay <small>(DR)</small>
| | Samuel D.<br/>Ingham <small>(DR)</small>
| | Daniel<br/>Udree <small>(DR)</small>
| | Thomas<br/>Murray Jr. <small>(DR)</small>
| | Walter<br/>Forward <small>(DR)</small>
|}
</div>
1823–1833: 26 seats
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.06em;"
! Congress
|- style="white-space:nowrap; height:7.24em;"
|<br/>(1823–1825)
|- style="white-space:nowrap; height:7.24em"
| <br/>(1825–1827)
|- style="white-space:nowrap; height:3em"
|<br/>(1827–1829)
|- style="white-space:nowrap; height:3em"
|<br/>(1829–1831)
|- style="white-space:nowrap; height:6.74em"
|<br/>(1831–1833)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=26 | District
! rowspan=2 | Congress
|-
!
!
!
! colspan=3 |
!
!
! colspan=2 |
! colspan=2 |
! colspan=3 |
!
! colspan=2 |
!
!
!
!
! colspan=2 |
!
!
|- style="height:3em"
| rowspan=2 | Samuel<br/>Breck <small>(F)</small>
| rowspan=2 | Joseph<br/>Hemphill<br/><small>(F)</small>
| rowspan=2 | Daniel H.<br/>Miller<br/><small>(DR)</small>
| rowspan=2 | James<br/>Buchanan<br/><small>(F)</small>
| rowspan=2 | Samuel<br/>Edwards<br/><small>(F)</small>
| rowspan=2 | Isaac<br/>Wayne<br/><small>(F)</small>
| rowspan=2 | Philip S.<br/>Markley<br/><small>(DR)</small>
| rowspan=2 | Robert<br/>Harris<br/><small>(DR)</small>
| rowspan=2 | Daniel<br/>Udree<br/><small>(DR)</small>
| rowspan=2 | Henry<br/>Wilson<br/><small>(DR)</small>
| rowspan=2 | Samuel<br/>D.<br/>Ingham<br/><small>(DR)</small>
| | Thomas J.<br/>Rogers <small>(DR)</small>
| rowspan=2 | William<br/>Cox<br/>Ellis<br/><small>(F)</small>
| rowspan=2 | George<br/>Kremer<br/><small>(DR)</small>
| rowspan=2 | Samuel<br/>McKean<br/><small>(DR)</small>
| rowspan=2 | James S.<br/>Mitchell<br/><small>(DR)</small>
| rowspan=2 | John<br/>Findlay<br/><small>(DR)</small>
| rowspan=2 | James<br/>Wilson<br/><small>(DR)</small>
| rowspan=2 | John<br/>Brown<br/><small>(DR)</small>
| | John Tod <small>(DR)</small>
| rowspan=2 | Andrew<br/>Stewart<br/><small>(DR)</small>
| rowspan=2 | Thomas<br/>Patterson<br/><small>(DR)</small>
| rowspan=2 | Walter<br/>Forward<br/><small>(DR)</small>
| rowspan=2 | James<br/>Allison Jr.<br/><small>(DR)</small>
| rowspan=2 | George<br/>Plumer<br/><small>(DR)</small>
| rowspan=2 | Patrick<br/>Farrelly<br/><small>(DR)</small>
| rowspan=2 | <br/>(1823–1825)
|-
| | George<br/>Wolf <small>(DR)</small>
| | Alexander<br/>Thomson <small>(DR)</small>
|- style="height:3em"
| rowspan=2 | John<br/>Wurts <small>(J)</small>
| | Joseph<br/>Hemphill <small>(J)</small>
| rowspan=4 | Daniel H.<br/>Miller <small>(J)</small>
| rowspan=4 | James<br/>Buchanan<br/><small>(J)</small>
| rowspan=2 | Samuel<br/>Edwards <small>(J)</small>
| rowspan=3 | Charles<br/>Miner <small>(J)</small>
| rowspan=2 | Philip S.<br/>Markley<br/><small>(NR)</small>
| rowspan=2 | Robert<br/>Harris <small>(J)</small>
| rowspan=3 | William<br/>Addams<br/><small>(J)</small>
| | Henry<br/>Wilson <small>(J)</small>
| rowspan=3 | Samuel<br/>D.<br/>Ingham<br/><small>(J)</small>
| rowspan=3 | George<br/>Wolf <small>(J)</small>
| rowspan=3 | Espy<br/>Van<br/>Horne<br/><small>(J)</small>
| rowspan=3 | George<br/>Kremer<br/><small>(J)</small>
| rowspan=3 | Samuel<br/>McKean<br/><small>(J)</small>
| rowspan=2 | James S.<br/>Mitchell<br/><small>(J)</small>
| rowspan=2 | John<br/>Findlay <small>(J)</small>
| rowspan=2 | James<br/>Wilson<br/><small>(NR)</small>
| rowspan=3 | John<br/>Mitchell <small>(J)</small>
| | Alexander<br/>Thomson <small>(J)</small>
| rowspan=3 | Andrew<br/>Stewart<br/><small>(J)</small>
| rowspan=3 | Joseph<br/>Lawrence<br/><small>(NR)</small>
| rowspan=3 | James S.<br/>Stevenson<br/><small>(J)</small>
| rowspan=3 | Robert<br/>Orr Jr. <small>(J)</small>
| rowspan=2 | George<br/>Plumer<br/><small>(J)</small>
| | Patrick<br/>Farrelly <small>(J)</small>
| rowspan=2 | <br/>(1825–1827)
|-
| | Thomas<br/>Kittera <small>(NR)</small>
| | Jacob<br/>Krebs <small>(J)</small>
| rowspan=3 | Chauncey<br/>Forward <small>(J)</small>
| | Thomas H.<br/>Sill <small>(NR)</small>
|- style="height:3em"
| rowspan=4 | Joel B.<br/>Sutherland<br/><small>(J)</small>
| | John<br/>Sergeant <small>(NR)</small>
| | Samuel<br/>Anderson <small>(J)</small>
| rowspan=2 | John B.<br/>Sterigere<br/><small>(J)</small>
| rowspan=2 | Innis<br/>Green<br/><small>(J)</small>
| rowspan=2 | Joseph<br/>Fry Jr. <small>(J)</small>
| rowspan=4 | Adam<br/>King <small>(J)</small>
| rowspan=3 | William<br/>Ramsey<br/><small>(J)</small>
| | James<br/>Wilson <small>(J)</small>
| rowspan=4 | Richard<br/>Coulter<br/><small>(J)</small>
| | Stephen<br/>Barlow <small>(J)</small>
| <br/>(1827–1829)
|- style="height:3em"
| | Joseph<br/>Hemphill <small>(J)</small>
| | Joshua<br/>Evans Jr. <small>(J)</small>
| | George G.<br/>Leiper <small>(J)</small>
| rowspan=3 | Henry<br/>A. P.<br/>Muhlen-<br/>berg <small>(J)</small>
| rowspan=3 | Samuel<br/>A.<br/>Smith<br/><small>(J)</small>
| rowspan=3 | Peter<br/>Ihrie Jr. <small>(J)</small>
| rowspan=3 | James<br/>Ford <small>(J)</small>
| | Alem<br/>Marr <small>(J)</small>
| rowspan=3 | Philander<br/>Stephens<br/><small>(J)</small>
| rowspan=3 | Thomas<br/>Hartley<br/>Crawford<br/><small>(J)</small>
| | John<br/>Scott <small>(J)</small>
| | Thomas<br/>Irwin <small>(J)</small>
| | William<br/>McCreery <small>(J)</small>
| rowspan=3 | Harmar<br/>Denny<br/>
| rowspan=3 | John<br/>Gilmore<br/><small>(J)</small>
| | Thomas H.<br/>Sill <small>(NR)</small>
| <br/>(1829–1831)
|- style="height:3em"
| rowspan=2 | Henry<br/>Horn <small>(J)</small>
| rowspan=2 | John G.<br/>Watmough<br/><small>(NR)</small>
| rowspan=2 | William<br/>Hiester<br/>Jr.
| rowspan=2 | David<br/>Potts Jr.<br/>
| rowspan=2 | Joshua<br/>Evans<br/>Jr. <small>(J)</small>
| rowspan=2 | Joel<br/>Keith<br/>Mann <small>(J)</small>
| rowspan=2 | John C.<br/>Bucher<br/><small>(J)</small>
| rowspan=2 | Henry<br/>King <small>(J)</small>
| rowspan=2 | Lewis<br/>Dewart<br/><small>(J)</small>
| rowspan=2 | Robert<br/>Allison<br/>
| rowspan=2 | George<br/>Burd <small>(NR)</small>
| rowspan=2 | Andrew<br/>Stewart<br/>
| rowspan=2 | Thomas<br/>McKennan<br/>
| rowspan=2 | John<br/>Banks<br/>
| rowspan=2 | <br/>(1831–1833)
|-
| | Robert<br/>McCoy <small>(J)</small>
|}
</div>
1833–1843: 28 seats
Following the 1830 census, Pennsylvania was apportioned 28 seats. The commonwealth divided them into 25 districts and two districts, the and the , had two and three seats respectively.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.1em;"
! Congress
|- style="white-space:nowrap; height:3em;"
|<br/>(1833–1835)
|- style="white-space:nowrap; height:5.6em"
| <br/>(1835–1837)
|- style="white-space:nowrap; height:5.6em"
|<br/>(1837–1839)
|- style="white-space:nowrap; height:6.7em"
|<br/>(1839–1841)
|- style="white-space:nowrap; height:7.4em"
|<br/>(1841–1843)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=28 | District
! rowspan=2 | Cong­ress
|-
!
! colspan=2 |
!
! colspan=3 |
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=3 | Joel B.<br/>Sutherland<br/><small>(J)</small>
| | Horace<br/>Binney <small>(NR)</small>
| rowspan=3 | James<br/>Harper<br/><small>(NR)</small>
| | John G.<br/>Watmough <small>(NR)</small>
| rowspan=5 | David<br/>Potts<br/>Jr.<br/>
| rowspan=5 | Edward<br/>Darlington<br/>
| rowspan=3 | William<br/>Hiester<br/>
| | Joel Keith<br/>Mann <small>(J)</small>
| | Robert<br/>Ramsey <small>(J)</small>
| rowspan=3 | David D.<br/>Wagener<br/><small>(J)</small>
| | Henry<br/>King <small>(J)</small>
| rowspan=3 | Henry A. P.<br/>Muhlenberg<br/><small>(J)</small>
| rowspan=3 | William<br/>Clark<br/>
| | Charles A.<br/>Barnitz
| rowspan=3 | George<br/>Chambers<br/>
| rowspan=2 | Jesse<br/>Miller<br/><small>(J)</small>
| rowspan=3 | Joseph<br/>Henderson<br/><small>(J)</small>
| rowspan=3 | Andrew<br/>Beaumont<br/><small>(J)</small>
| rowspan=3 | Joseph B.<br/>Anthony<br/><small>(J)</small>
| rowspan=3 | John<br/>Laporte<br/><small>(J)</small>
| | George<br/>Burd <small>(NR)</small>
| | Richard<br/>Coulter <small>(J)</small>
| | Andrew<br/>Stewart
| rowspan=5 | Thomas<br/>McKennan<br/>
| rowspan=3 | Harmar<br/>Denny<br/>
| rowspan=3 | Samuel<br/>Smith<br/>Harrison<br/><small>(J)</small>
| rowspan=2 | John<br/>Banks<br/>
| rowspan=3 | John<br/>Galbraith<br/><small>(J)</small>
| <br/>(1833–1835)
|- style="height:2em"
| rowspan=2 | Joseph<br/>Reed<br/>Ingersoll <small>(NR)</small>
| rowspan=2 | Michael<br/>Woolston<br/>Ash <small>(J)</small>
| rowspan=2 | Jacob<br/>Fry Jr. <small>(J)</small>
| rowspan=2 | Mathias<br/>Morris<br/><small>(NR)</small>
| rowspan=2 | Edward Burd<br/>Hubley <small>(J)</small>
| rowspan=2 | Henry<br/>Logan <small>(J)</small>
| rowspan=2 | Job<br/>Mann <small>(J)</small>
| rowspan=2 | John<br/>Klingensmith<br/>Jr. <small>(J)</small>
| rowspan=2 | Andrew<br/>Buchanan<br/><small>(J)</small>
| rowspan=2 | <br/>(1835–1837)
|- style="height:2em"
| | James<br/>Black <small>(J)</small>
| | John James<br/>Pearson <small>(NR)</small>
|- style="height:2em"
| rowspan=4 | Lemuel<br/>Paynter<br/><small>(D)</small>
| rowspan=4 | John<br/>Sergeant<br/><small>(W)</small>
| rowspan=6 | George<br/>W.<br/>Toland<br/><small>(W)</small>
| | Francis J.<br/>Harper <small>(D)</small>
| rowspan=4 | Edward<br/>Davies<br/>
| rowspan=2 | Jacob<br/>Fry Jr.<br/><small>(D)</small>
| rowspan=2 | Mathias<br/>Morris<br/><small>(W)</small>
| rowspan=4 | David D.<br/>Wagener<br/><small>(D)</small>
| rowspan=2 | Edward<br/>Burd<br/>Hubley <small>(D)</small>
| | Henry A. P.<br/>Muhlenberg <small>(D)</small>
| rowspan=2 | Luther<br/>Reily<br/><small>(D)</small>
| rowspan=2 | Henry<br/>Logan <small>(D)</small>
| rowspan=2 | Daniel<br/>Sheffer<br/><small>(D)</small>
| rowspan=2 | Charles<br/>McClure<br/><small>(D)</small>
| rowspan=2 | William<br/>Wilson<br/>Potter <small>(D)</small>
| rowspan=4 | David<br/>Petrikin<br/><small>(D)</small>
| rowspan=4 | Robert H.<br/>Hammond<br/><small>(D)</small>
| rowspan=4 | Samuel<br/>W. Morris<br/><small>(D)</small>
| rowspan=4 | Charles<br/>Ogle<br/>
| rowspan=2 | John<br/>Klingensmith<br/>Jr. <small>(D)</small>
| rowspan=2 | Andrew<br/>Buchanan<br/><small>(D)</small>
| rowspan=3 | Richard<br/>Biddle<br/><small>(A-M)</small>
| rowspan=4 | William<br/>Beatty<br/><small>(D)</small>
| rowspan=4 | Thomas<br/>Henry<br/>
| rowspan=2 | Arnold<br/>Plumer<br/><small>(D)</small>
| rowspan=2 | <br/>(1837–1839)
|- style="height:2em"
| rowspan=3 | Charles<br/>Naylor <small>(W)</small>
| rowspan=5 | George M.<br/>Keim<br/><small>(D)</small>
|- style="height:3em"
| rowspan=2 | Francis<br/>James<br/>
| rowspan=2 | John<br/>Edwards<br/>
| rowspan=4 | Joseph<br/>Fornance<br/><small>(D)</small>
| rowspan=2 | John<br/>Davis<br/><small>(D)</small>
| rowspan=4 | Peter<br/>Newhard<br/><small>(D)</small>
| rowspan=4 | William<br/>Simonton<br/><small>(W)</small>
| rowspan=4 | James Gerry<br/><small>(D)</small>
| rowspan=4 | James<br/>Cooper<br/><small>(W)</small>
| rowspan=2 | William S.<br/>Ramsey <small>(D)</small>
| rowspan=2 | George<br/>McCulloch<br/><small>(D)</small>
| rowspan=4 | Albert<br/>Gallatin<br/>Marchand<br/><small>(D)</small>
| rowspan=2 | Enos<br/>Hook<br/><small>(D)</small>
| rowspan=2 | Isaac Leet<br/><small>(D)</small>
| rowspan=2 | John<br/>Galbraith<br/><small>(D)</small>
| rowspan=2 | <br/>(1839–1841)
|- style="height:2em"
| | Henry M.<br/>Brackenridge <small>(W)</small>
|- style="height:3em"
| rowspan=2 | Charles<br/>Brown<br/><small>(D)</small>
| rowspan=2 | Joseph<br/>Reed<br/>Ingersoll<br/><small>(W)</small>
| rowspan=2 | Charles<br/>Jared<br/>Ingersoll<br/><small>(D)</small>
| rowspan=2 | Jeremiah<br/>Brown<br/><small>(W)</small>
| rowspan=2 | John<br/>Edwards<br/><small>(W)</small>
| rowspan=2 | Francis<br/>James<br/><small>(W)</small>
| rowspan=2 | Robert<br/>Ramsey<br/><small>(W)</small>
| rowspan=2 | John<br/>Westbrook<br/><small>(D)</small>
| rowspan=2 | Amos<br/>Gustine<br/><small>(D)</small>
| rowspan=2 | James<br/>Irvin <small>(W)</small>
| rowspan=2 | Benjamin<br/>A.<br/>Bidlack<br/><small>(D)</small>
| rowspan=2 | John<br/>Snyder<br/><small>(D)</small>
| | Davis Di-<br/>mock Jr. <small>(D)</small>
| | Henry<br/>Black <small>(W)</small>
| rowspan=2 | Henry<br/>White<br/>Beeson<br/><small>(D)</small>
| | Joseph<br/>Lawrence <small>(W)</small>
| rowspan=2 | William W.<br/>Irwin <small>(W)</small>
| rowspan=2 | William<br/>Jack<br/><small>(D)</small>
| rowspan=2 | Thomas<br/>Henry <small>(W)</small>
| rowspan=2 | Arnold<br/>Plumer<br/><small>(D)</small>
| rowspan=2 | <br/>(1841–1843)
|- style="height:2em"
| | Almon H.<br/>Read <small>(D)</small>
| | James M.<br/>Russell <small>(W)</small>
| | Thomas<br/>McKennan <small>(W)</small>
|}
</div>
1843–1853: 24 seats
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.12em;"
! Congress
|- style="white-space:nowrap; height:7.28em;"
|<br/>(1843–1845)
|- style="white-space:nowrap; height:3em"
|<br/>(1845–1847)
|- style="white-space:nowrap; height:7.28em"
|<br/>(1847–1849)
|- style="white-space:nowrap; height:6.62em"
|<br/>(1849–1851)
|- style="white-space:nowrap; height:3em"
|<br/>(1851–1853)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=24 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=2 | Edward<br/>Joy<br/>Morris <small>(W)</small>
| rowspan=5 | Joseph<br/>Reed<br/>Ingersoll<br/><small>(W)</small>
| rowspan=2 | John T.<br/>Smith <small>(D)</small>
| rowspan=5 | Charles<br/>Jared<br/>Ingersoll<br/><small>(D)</small>
| rowspan=3 | Jacob<br/>Senewell<br/>Yost <small>(D)</small>
| rowspan=2 | Michael<br/>Hutchinson<br/>Jenks <small>(W)</small>
| rowspan=5 | Abraham<br/>Robinson<br/>McIlvaine<br/><small>(W)</small>
| rowspan=2 | Jeremiah<br/>Brown<br/><small>(W)</small>
| rowspan=3 | John<br/>Ritter <small>(D)</small>
| rowspan=5 | Richard<br/>Brodhead<br/><small>(D)</small>
| rowspan=2 | Benjamin<br/>A.<br/>Bidlack <small>(D)</small>
| | Almon H.<br/>Read <small>(D)</small>
| | Henry<br/>Frick <small>(W)</small>
| rowspan=3 | Alexander<br/>Ramsey <small>(W)</small>
| rowspan=2 | Henry<br/>Nes <small>(ID)</small>
| rowspan=3 | James<br/>Black <small>(D)</small>
| rowspan=2 | James<br/>Irvin <small>(W)</small>
| rowspan=5 | Andrew<br/>Stewart <small>(W)</small>
| rowspan=3 | Henry<br/>Donnel<br/>Foster <small>(D)</small>
| rowspan=2 | John<br/>Dickey <small>(W)</small>
| | William<br/>Wilkins <small>(D)</small>
| rowspan=2 | Samuel<br/>Hays <small>(D)</small>
| rowspan=2 | Charles<br/>Manning<br/>Reed <small>(W)</small>
| rowspan=3 | Joseph<br/>Buffington<br/><small>(W)</small>
| rowspan=2 | <br/>(1843–1845)
|- style="height:3em"
| | George<br/>Fuller <small>(D)</small>
| rowspan=4 | James<br/>Pollock<br/><small>(W)</small>
| rowspan=2 | Cornelius<br/>Darragh<br/><small>(W)</small>
|- style="height:3em"
| rowspan=5 | Lewis<br/>Charles<br/>Levin <small>(KN)</small>
| | John Hull<br/>Campbell <small>(KN)</small>
| | Jacob<br/>Erdman <small>(D)</small>
| rowspan=3 | John<br/>Strohm<br/><small>(W)</small>
| | Owen D.<br/>Leib <small>(D)</small>
| rowspan=5 | David<br/>Wilmot <small>(D)</small>
| | Moses<br/>McClean <small>(D)</small>
| rowspan=3 | John<br/>Blanchard<br/><small>(W)</small>
| | John Hoge<br/>Ewing <small>(W)</small>
| | William Swan<br/>Garvin <small>(D)</small>
| rowspan=5 | James<br/>Thompson<br/><small>(D)</small>
| <br/>(1845–1847)
|- style="height:3em"
| rowspan=2 | Charles<br/>Brown <small>(D)</small>
| rowspan=4 | John<br/>Freedley<br/><small>(W)</small>
| | John W.<br/>Hornbeck <small>(W)</small>
| rowspan=4 | William<br/>Strong <small>(D)</small>
| rowspan=3 | Chester<br/>P.<br/>Butler <small>(W)</small>
| rowspan=2 | George<br/>Nicholas<br/>Eckert <small>(W)</small>
| rowspan=3 | Henry<br/>Nes <small>(W)</small>
| rowspan=2 | Jasper<br/>Ewing<br/>Brady <small>(W)</small>
| rowspan=4 | Job<br/>Mann <small>(D)</small>
| rowspan=2 | John<br/>Dickey <small>(W)</small>
| rowspan=4 | Moses<br/>Hampton<br/><small>(W)</small>
| rowspan=2 | John W.<br/>Farrelly <small>(W)</small>
| rowspan=2 | Alexander<br/>Irvin <small>(W)</small>
| rowspan=2 | <br/>(1847–1849)
|- style="height:3em"
| | Samuel A.<br/>Bridges <small>(D)</small>
|- style="height:3em"
| rowspan=3 | Joseph<br/>R.<br/>Chandler<br/><small>(W)</small>
| rowspan=3 | Henry D.<br/>Moore <small>(W)</small>
| rowspan=3 | John<br/>Robbins<br/><small>(D)</small>
| rowspan=3 | Thomas<br/>Ross <small>(D)</small>
| rowspan=2 | Jesse C.<br/>Dickey <small>(W)</small>
| rowspan=3 | Thaddeus<br/>Stevens<br/><small>(W)</small>
| rowspan=3 | Milo M.<br/>Dimmick<br/><small>(D)</small>
| rowspan=2 | Joseph<br/>Casey <small>(W)</small>
| rowspan=2 | Charles W.<br/>Pitman <small>(W)</small>
| rowspan=3 | James X.<br/>McLanahan<br/><small>(D)</small>
| rowspan=2 | Samuel<br/>Calvin <small>(W)</small>
| rowspan=2 | Andrew J.<br/>Ogle <small>(W)</small>
| rowspan=2 | Robert R.<br/>Reed <small>(W)</small>
| rowspan=2 | John W.<br/>Howe <small>(FS)</small>
| rowspan=3 | Alfred<br/>Gilmore<br/><small>(D)</small>
| rowspan=2 | <br/>(1849–1851)
|- style="height:3em"
| | John<br/>Brisbin <small>(D)</small>
| | Joel B.<br/>Danner <small>(D)</small>
|- style="height:3em"
| | Thomas B.<br/>Florence <small>(D)</small>
| | John<br/>McNair <small>(D)</small>
| | John A.<br/>Morrison <small>(D)</small>
| | J. Glancy<br/>Jones <small>(D)</small>
| | Henry Mills<br/>Fuller <small>(W)</small>
| | Galusha A.<br/>Grow <small>(D)</small>
| | James<br/>Gamble <small>(D)</small>
| | Thomas M.<br/>Bibighaus <small>(W)</small>
| | William H.<br/>Kurtz <small>(D)</small>
| | Andrew<br/>Parker <small>(D)</small>
| | John L.<br/>Dawson <small>(D)</small>
| | Joseph H.<br/>Kuhns <small>(W)</small>
| | John<br/>Allison <small>(W)</small>
| | Thomas M.<br/>Howe <small>(W)</small>
| | John W.<br/>Howe <small>(W)</small>
| | Carlton B.<br/>Curtis <small>(D)</small>
| <br/>(1851–1853)
|}
</div>
1853–1863: 25 seats
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.08em;"
! Congress
|- style="white-space:nowrap; height:5.62em;"
|<br/>(1853–1855)
|- style="white-space:nowrap; height:3em"
| <br/>(1855–1857)
|- style="white-space:nowrap; height:7.24em"
|<br/>(1857–1859)
|- style="white-space:nowrap; height:5.62em"
|<br/>(1859–1861)
|- style="white-space:nowrap; height:7.24em"
|<br/>(1861–1863)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=25 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=7 | Thomas<br/>B.<br/>Florence<br/><small>(D)</small>
| rowspan=2 | Joseph R.<br/>Chandler <small>(W)</small>
| rowspan=2 | John<br/>Robbins<br/><small>(D)</small>
| rowspan=2 | William H.<br/>Witte <small>(D)</small>
| rowspan=2 | John<br/>McNair <small>(D)</small>
| rowspan=2 | William<br/>Everhart<br/><small>(W)</small>
| rowspan=2 | Samuel<br/>A.<br/>Bridges <small>(D)</small>
| | Henry A.<br/>Muhlenberg <small>(D)</small>
| rowspan=2 | Isaac E.<br/>Hiester <small>(W)</small>
| rowspan=2 | Ner<br/>Middleswarth<br/><small>(W)</small>
| rowspan=2 | Christian<br/>M.<br/>Straub <small>(D)</small>
| rowspan=2 | Hendrick B.<br/>Wright <small>(D)</small>
| rowspan=3 | Asa<br/>Packer<br/><small>(D)</small>
| rowspan=3 | Galusha<br/>A. Grow<br/><small>(D)</small>
| rowspan=2 | James<br/>Gamble <small>(D)</small>
| rowspan=2 | Carlton<br/>B.<br/>Curtis <small>(D)</small>
| rowspan=2 | Samuel L.<br/>Russell <small>(W)</small>
| rowspan=2 | John<br/>McCulloch<br/><small>(W)</small>
| rowspan=2 | Augustus<br/>Drum <small>(D)</small>
| rowspan=2 | John L.<br/>Dawson <small>(D)</small>
| rowspan=2 | David<br/>Ritchie <small>(W)</small>
| rowspan=2 | Thomas<br/>Marshall<br/>Howe <small>(W)</small>
| rowspan=2 | Michael<br/>C.<br/>Trout <small>(D)</small>
| rowspan=2 | John<br/>Dick <small>(W)</small>
| rowspan=2 | William<br/>H.<br/>Kurtz <small>(D)</small>
| rowspan=2 | <br/>(1853–1855)
|- style="height:2em"
| rowspan=3 | J. Glancy<br/>Jones <small>(D)</small>
|- style="height:3em"
| | Job Roberts<br/>Tyson <small>(W)</small>
| | William<br/>Millward <small>(O)</small>
| | Jacob<br/>Broom <small>(KN)</small>
| | John Cad-<br/>walader <small>(D)</small>
| rowspan=3 | John<br/>Hickman<br/><small>(D)</small>
| | Samuel C.<br/>Bradshaw <small>(O)</small>
| | Anthony E.<br/>Roberts <small>(O)</small>
| | John C.<br/>Kunkel <small>(W)</small>
| | James H.<br/>Campbell <small>(O)</small>
| | Henry Mills<br/>Fuller <small>(O)</small>
| | John J.<br/>Pearce <small>(O)</small>
| | Lemuel<br/>Todd <small>(O)</small>
| | David F.<br/>Robison <small>(O)</small>
| | John Rufus<br/>Edie <small>(O)</small>
| | John<br/>Covode <small>(O)</small>
| | Jonathan<br/>Knight <small>(O)</small>
| | David<br/>Ritchie <small>(O)</small>
| | Samuel A.<br/>Purviance <small>(O)</small>
| | John<br/>Allison <small>(O)</small>
| | David<br/>Barclay <small>(D)</small>
| | John<br/>Dick <small>(O)</small>
| <br/>(1855–1857)
|- style="height:3em"
| rowspan=5 | Edward<br/>Joy<br/>Morris <small>(R)</small>
| rowspan=2 | James<br/>Landy <small>(D)</small>
| rowspan=2 | Henry M.<br/>Phillips <small>(D)</small>
| rowspan=2 | Owen<br/>Jones <small>(D)</small>
| rowspan=2 | Henry<br/>Chapman <small>(D)</small>
| rowspan=2 | Anthony<br/>E.<br/>Roberts <small>(R)</small>
| rowspan=2 | John C.<br/>Kunkel <small>(R)</small>
| rowspan=2 | William<br/>Lewis<br/>Dewart <small>(D)</small>
| | John G.<br/>Montgomery <small>(D)</small>
| rowspan=4 | William<br/>H.<br/>Dimmick<br/><small>(D)</small>
| rowspan=6 | Galusha<br/>A. Grow<br/><small>(R)</small>
| rowspan=2 | Allison<br/>White <small>(D)</small>
| rowspan=2 | John<br/>Alexander<br/>Ahl <small>(D)</small>
| rowspan=2 | Wilson<br/>Reilly <small>(D)</small>
| rowspan=2 | John<br/>Rufus<br/>Edie <small>(R)</small>
| rowspan=6 | John<br/>Covode <small>(R)</small>
| rowspan=4 | William<br/>Montgomery<br/><small>(D)</small>
| rowspan=2 | David<br/>Ritchie <small>(R)</small>
| rowspan=2 | Samuel A.<br/>Purviance <small>(R)</small>
| rowspan=4 | William<br/>Stewart<br/><small>(R)</small>
| rowspan=2 | James<br/>Lisle<br/>Gillis <small>(D)</small>
| rowspan=2 | John<br/>Dick <small>(R)</small>
| rowspan=2 | <br/>(1857–1859)
|- style="height:2em"
| | William H.<br/>Keim <small>(R)</small>
| | Paul Leidy <small>(D)</small>
|- style="height:2em"
| rowspan=4 | John<br/>Paul<br/>Verree <small>(R)</small>
| rowspan=2 | William<br/>Millward<br/><small>(R)</small>
| rowspan=2 | John<br/>Wood <small>(R)</small>
| rowspan=2 | John<br/>Hickman<br/><small>(D)</small>
| rowspan=2 | Henry Clay<br/>Longnecker<br/><small>(R)</small>
| | J. Schwartz <small>(D)</small>
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.2em;"
! Congress
|- style="white-space:nowrap; height:5.2em;"
|<br/>(1913–1915)
|- style="white-space:nowrap; height:3.3em"
| <br/>(1915–1917)
|- style="white-space:nowrap; height:7.3em"
|<br/>(1917–1919)
|- style="white-space:nowrap; height:7.3em"
|<br/>(1919–1921)
|- style="white-space:nowrap; height:5.6em"
|<br/>(1921–1923)
|- style="white-space:nowrap; height:3.3em;"
|<br/>(1923–1925)
|- style="white-space:nowrap; height:3.3em"
|<br/>(1925–1927)
|- style="white-space:nowrap; height:5.2em"
|<br/>(1927–1929)
|- style="white-space:nowrap; height:3em"
|<br/>(1929–1931)
|- style="white-space:nowrap; height:5.2em"
|<br/>(1931–1933)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=32 | District
! colspan=4 | At-large
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:2em"
| rowspan="10" | William<br/>Scott<br/>Vare <small>(R)</small>
| rowspan="15" | George<br/>S.<br/>Graham<br/><small>(R)</small>
| rowspan=5 | J.<br/>Hampton<br/>Moore<br/><small>(R)</small>
| rowspan="9" | George<br/>W.<br/>Edmonds<br/><small>(R)</small>
| | Michael<br/>Donohoe<br/><small>(D)</small>
| | J. W.<br/>Logue <small>(D)</small>
| rowspan="8" | Thomas<br/>S.<br/>Butler<br/><small>(R)</small>
| | Robert E.<br/>Difenderfer<br/><small>(D)</small>
| rowspan="8" | William<br/>W.<br/>Griest<br/><small>(R)</small>
| rowspan=4 | John R.<br/>Farr <small>(R)</small>
| rowspan=2 | John J.<br/>Casey <small>(D)</small>
| | Robert<br/>Emmett<br/>Lee <small>(D)</small>
| | John H.<br/>Rothermel<br/><small>(D)</small>
| | William<br/>D. B.<br/>Ainey <small>(R)</small>
| rowspan="8" | Edgar<br/>R.<br/>Kiess <small>(R)</small>
| rowspan=6 | John<br/>V.<br/>Lesher<br/><small>(D)</small>
| | Franklin L.<br/>Dershem <small>(D)</small>
| rowspan="8" | Aaron<br/>S.<br/>Kreider<br/><small>(R)</small>
| rowspan=2 | Warren<br/>W.<br/>Bailey <small>(D)</small>
| | Andrew R.<br/>Brodbeck <small>(D)</small>
| | Charles E.<br/>Patton <small>(R)</small>
| rowspan=2 | Abraham<br/>Lincoln<br/>Keister <small>(R)</small>
| | Wooda N.<br/>Carr <small>(D)</small>
| | Henry W.<br/>Temple<br/><small>(Prog)</small>
| | Milton W.<br/>Shreve <small>(R)</small>
| | A. Mitchell<br/>Palmer <small>(D)</small>
| | J. N.<br/>Langham<br/><small>(R)</small>
| | Willis J.<br/>Hulings<br/><small>(Prog)</small>
| rowspan="8" | Stephen<br/>G.<br/>Porter<br/><small>(R)</small>
| | M. Clyde<br/>Kelly <small>(R)</small>
| | James F.<br/>Burke<br/><small>(R)</small>
| rowspan=2 | Andrew<br/>J.<br/>Barchfeld<br/><small>(R)</small>
| | Fred E.<br/>Lewis <small>(R)</small>
| | John M.<br/>Morin <small>(R)</small>
| | Anderson<br/>H.<br/>Walters <small>(R)</small>
| | Arthur R.<br/>Rupley <small>(R)</small>
| <br/>(1913–1915)
|- style="height:2em"
| rowspan=5 | Peter E.<br/>Costello<br/><small>(R)</small>
| rowspan="7" | George P.<br/>Darrow <small>(R)</small>
| rowspan="7" | Henry<br/>Winfield<br/>Watson <small>(R)</small>
| rowspan=3 | Robert<br/>D.<br/>Heaton <small>(R)</small>
| rowspan=5 | Arthur<br/>G.<br/>Dewalt<br/><small>(D)</small>
| rowspan="7" | Louis<br/>T.<br/>McFadden<br/><small>(R)</small>
| rowspan="7" | Benjamin K.<br/>Focht <small>(R)</small>
| | C. William<br/>Beales <small>(R)</small>
| rowspan=3 | Charles<br/>H.<br/>Rowland<br/><small>(R)</small>
| | Robert F.<br/>Hopwood <small>(R)</small>
| rowspan="7" | Henry<br/>W.<br/>Temple<br/><small>(R)</small>
| | Michael<br/>Liebel Jr. <small>(D)</small>
| rowspan=5 | Henry<br/>J.<br/>Steele <small>(D)</small>
| | S. Taylor<br/>North <small>(R)</small>
| | Samuel H.<br/>Miller <small>(R)</small>
| | William H.<br/>Coleman <small>(R)</small>
| rowspan="7" | John M.<br/>Morin<br/><small>(R)</small>
| rowspan=3 | John<br/>R. K.<br/>Scott <small>(R)</small>
| rowspan=5 | Thomas S.<br/>Crago <small>(R)</small>
| | Daniel F.<br/>Lafean <small>(R)</small>
| rowspan=5 | Mahlon<br/>M.<br/>Garland<br/><small>(R)</small>
| <br/>(1915–1917)
|- style="height:2em"
| rowspan=2 | Thomas W.<br/>Templeton<br/><small>(R)</small>
| rowspan="6" | John<br/>M.<br/>Rose <small>(R)</small>
| rowspan=2 | Andrew R.<br/>Brodbeck <small>(D)</small>
| rowspan=2 | Edward<br/>E.<br/>Robbins <small>(R)</small>
| rowspan=2 | Bruce<br/>F.<br/>Sterling <small>(D)</small>
| rowspan=2 | Henry<br/>Alden<br/>Clark <small>(R)</small>
| rowspan=14 | Nathan<br/>L.<br/>Strong<br/><small>(R)</small>
| | Orrin D.<br/>Bleakley <small>(R)</small>
| rowspan=2 | M. Clyde<br/>Kelly<br/><small>(Prog)</small>
| rowspan="6" | Guy E.<br/>Campbell<br/><small>(D)</small>
| rowspan=2 | Joseph<br/>McLaughlin<br/><small>(R)</small>
| rowspan=2 | <br/>(1917–1919)
|- style="height:2em"
| | Earl H.<br/>Beshlin <small>(D)</small>
|- style="height:2em"
| | Patrick<br/>McLane <small>(D)</small>
| rowspan=2 | John J.<br/>Casey <small>(D)</small>
| rowspan="4" | John<br/>Reber <small>(R)</small>
| rowspan="4" | Edward<br/>S.<br/>Brooks <small>(R)</small>
| rowspan="4" | Evan J.<br/>Jones <small>(R)</small>
| rowspan=2 | John<br/>Haden<br/>Wilson <small>(D)</small>
| rowspan="4" | Samuel<br/>A.<br/>Kendall <small>(R)</small>
| rowspan=2 | Milton W.<br/>Shreve <small>(R)</small>
| rowspan=2 | Willis J.<br/>Hulings <small>(R)</small>
| rowspan="4" | M. Clyde<br/>Kelly <small>(R)</small>
| rowspan=3 | William<br/>J.<br/>Burke <small>(R)</small>
| rowspan=3 | Anderson<br/>H.<br/>Walters <small>(R)</small>
| rowspan=2 | <br/>(1919–1921)
|- style="height:2em"
| rowspan="11" | Harry<br/>C.<br/>Ransley<br/><small>(R)</small>
| | John R.<br/>Farr <small>(R)</small>
|- style="height:2em"
| rowspan="10" | James J.<br/>Connolly<br/><small>(R)</small>
| rowspan="2" | Charles R.<br/>Connell<br/><small>(R)</small>
| rowspan="2" | Clarence D.<br/>Coughlin <small>(R)</small>
| rowspan="2" | Fred B.<br/>Gernerd<br/><small>(R)</small>
| rowspan="2" | I.<br/>Clinton<br/>Kline <small>(R)</small>
| rowspan="2" | Adam<br/>Wyant <small>(R)</small>
| rowspan="2" | Milton W.<br/>Shreve <small>(IR)</small>
| rowspan="2" | William H.<br/>Kirkpatrick<br/><small>(R)</small>
| rowspan="4" | Harris<br/>J.<br/>Bixler <small>(R)</small>
| | Joseph<br/>McLaughlin <small>(R)</small>
| | Thomas S.<br/>Crago <small>(R)</small>
| rowspan="2" | <br/>(1921–1923)
|- style="height:2em"
!
!
!
!
|- style="height:2em"
| rowspan=7 | George<br/>Austin<br/>Welsh <small>(R)</small>
| rowspan=8 | George<br/>P.<br/>Darrow<br/><small>(R)</small>
| rowspan=3 | Thomas S.<br/>Butler <small>(R)</small>
| rowspan=8 | Henry<br/>Winfield<br/>Watson<br/><small>(R)</small>
| rowspan=5 | William<br/>W.<br/>Griest <small>(R)</small>
| rowspan=6 | Laurence<br/>H.<br/>Watres <small>(R)</small>
| | John J.<br/>Casey <small>(D)</small>
| rowspan=2 | George F.<br/>Brumm <small>(R)</small>
| | William M.<br/>Croll <small>(D)</small>
| rowspan=8 | Louis<br/>T.<br/>McFadden<br/><small>(R)</small>
| rowspan=5 | Edgar<br/>R.<br/>Kiess <small>(R)</small>
| | Herbert W.<br/>Cummings <small>(D)</small>
| rowspan=7 | Edward M.<br/>Beers <small>(R)</small>
| | Frank C.<br/>Sites <small>(D)</small>
| | George M.<br/>Wertz <small>(R)</small>
| rowspan=8 | J.<br/>Banks<br/>Kurtz <small>(R)</small>
| | Samuel F.<br/>Glatfelter <small>(D)</small>
| rowspan=2 | William<br/>I.<br/>Swoope <small>(R)</small>
| rowspan=8 | Samuel<br/>A.<br/>Kendall <small>(R)</small>
| rowspan=8 | Henry<br/>W.<br/>Temple<br/><small>(R)</small>
| rowspan=2 | Thomas<br/>W.<br/>Phillips<br/>Jr. <small>(R)</small>
| rowspan=8 | Milton<br/>W.<br/>Shreve<br/><small>(R)</small>
| | Everett<br/>Kent <small>(D)</small>
| rowspan=8 | Adam<br/>Wyant<br/><small>(R)</small>
| rowspan=5 | Stephen<br/>G.<br/>Porter <small>(R)</small>
| rowspan=8 | M.<br/>Clyde<br/>Kelly<br/><small>(R)</small>
| rowspan=4 | John M.<br/>Morin <small>(R)</small>
| rowspan=2 | James<br/>M.<br/>Magee <small>(R)</small>
| rowspan=8 | Guy E.<br/>Campbell<br/><small>(R)</small>
| <br/>(1923–1925)
|- style="height:2em"
| rowspan=7 | Benjamin<br/>M.<br/>Golder<br/><small>(R)</small>
| | Edmund N.<br/>Carpenter <small>(R)</small>
| | Charles J.<br/>Esterly <small>(R)</small>
| rowspan=7 | Frederick<br/>W.<br/>Magrady <small>(R)</small>
| | Joshua W.<br/>Swartz <small>(R)</small>
| | Anderson H.<br/>Walters <small>(R)</small>
| rowspan=5 | Franklin<br/>Menges <small>(R)</small>
| | William R.<br/>Coyle <small>(R)</small>
| <br/>(1925–1927)
|- style="height:1.5em"
| | James M.<br/>Hazlett <small>(R)</small>
| rowspan=3 | John J.<br/>Casey <small>(D)</small>
| rowspan=2 | Cyrus M.<br/>Palmer <small>(R)</small>
| rowspan=2 | Robert G.<br/>Bushong<br/><small>(R)</small>
| rowspan=6 | Isaac<br/>H.<br/>Doutrich<br/><small>(R)</small>
| rowspan=5 | J. Russell<br/>Leech <small>(R)</small>
| rowspan=6 | J. Mitchell<br/>Chase <small>(R)</small>
| rowspan=6 | J. Howard<br/>Swick <small>(R)</small>
| rowspan=6 | Thomas C.<br/>Cochran <small>(R)</small>
| rowspan=2 | Everett<br/>Kent <small>(D)</small>
| rowspan=6 | Harry<br/>A.<br/>Estep <small>(R)</small>
| rowspan=2 | <br/>(1927–1929)
|- style="height:1.5em"
| rowspan=5 | James M.<br/>Beck <small>(R)</small>
| rowspan=5 | James<br/>Wolfenden<br/><small>(R)</small>
|- style="height:1.5em"
| rowspan=4 | George F.<br/>Brumm <small>(R)</small>
| rowspan=2 | Charles J.<br/>Esterly <small>(R)</small>
| rowspan=4 | William R.<br/>Coyle <small>(R)</small>
| rowspan=4 | Patrick J.<br/>Sullivan <small>(R)</small>
| rowspan=2 | <br/>(1929–1931)
|- style="height:1.5em"
| rowspan=3 | J. Roland<br/>Kinzer <small>(R)</small>
| rowspan=3 | C. Murray<br/>Turpin <small>(R)</small>
| rowspan=3 | Robert F.<br/>Rich <small>(R)</small>
| rowspan=3 | Edmund<br/>F. Erk <small>(R)</small>
|- style="height:1.5em"
| rowspan=2 | Patrick J.<br/>Boland <small>(D)</small>
| rowspan=2 | Norton<br/>Lichten-<br/>walner <small>(D)</small>
| rowspan=2 | Harry L.<br/>Haines <small>(D)</small>
| rowspan=2 | <br/>(1931–1933)
|- style="height:2em"
| | Edward L.<br/>Stokes <small>(R)</small>
| | Robert L.<br/>Davis <small>(R)</small>
| | Joseph F.<br/>Biddle <small>(R)</small>
| | Howard W.<br/>Stull <small>(R)</small>
|}
</div>
1933–1943: 34 seats
Following the 1930 census, the delegation lost two seats.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.1em;"
! Congress
|- style="white-space:nowrap; height:5.69em;"
|<br/>(1933–1935)
|- style="white-space:nowrap; height:3em"
|<br/>(1935–1937)
|- style="white-space:nowrap; height:3em"
|<br/>(1937–1939)
|- style="white-space:nowrap; height:3em"
|<br/>(1939–1941)
|- style="white-space:nowrap; height:5.6em"
|<br/>(1941–1943)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=34 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=3 | Harry C.<br/>Ransley<br/><small>(R)</small>
| rowspan=2 | James M.<br/>Beck <small>(R)</small>
| rowspan=2 | Alfred M.<br/>Waldron<br/><small>(R)</small>
| rowspan=2 | George W.<br/>Edmonds<br/><small>(R)</small>
| rowspan=2 | James J.<br/>Connolly<br/><small>(R)</small>
| rowspan=2 | Edward L.<br/>Stokes <small>(R)</small>
| rowspan=3 | George P.<br/>Darrow <small>(R)</small>
| rowspan=7 | James<br/>Wolfenden<br/><small>(R)</small>
| | Henry W.<br/>Watson <small>(R)</small>
| rowspan=7 | J.<br/>Roland<br/>Kinzer<br/><small>(R)</small>
| rowspan=6 | Patrick<br/>J.<br/>Boland<br/><small>(D)</small>
| rowspan=3 | C.<br/>Murray<br/>Turpin<br/><small>(R)</small>
| rowspan=2 | George F.<br/>Brumm <small>(R)</small>
| rowspan=3 | William<br/>E.<br/>Richardson<br/><small>(D)</small>
| rowspan=2 | Louis T.<br/>McFadden<br/><small>(R)</small>
| rowspan=7 | Robert<br/>F.<br/>Rich<br/><small>(R)</small>
| rowspan=7 | J.<br/>William<br/>Ditter<br/><small>(R)</small>
| rowspan=4 | Benjamin<br/>K.<br/>Focht <small>(R)</small>
| rowspan=3 | Isaac<br/>H.<br/>Doutrich<br/><small>(R)</small>
| rowspan=2 | Thomas C.<br/>Cochran<br/><small>(R)</small>
| rowspan=7 | Francis<br/>E.<br/>Walter<br/><small>(D)</small>
| rowspan=4 | Harry L.<br/>Haines <small>(D)</small>
| rowspan=2 | J. Banks<br/>Kurtz <small>(R)</small>
| rowspan=7 | J.<br/>Buell<br/>Snyder<br/><small>(D)</small>
| rowspan=7 | Charles<br/>I.<br/>Faddis<br/><small>(D)</small>
| rowspan=2 | J. Howard<br/>Swick <small>(R)</small>
| rowspan=2 | Nathan L.<br/>Strong <small>(R)</small>
| rowspan=3 | William M.<br/>Berlin <small>(D)</small>
| rowspan=4 | Charles<br/>N.<br/>Crosby<br/><small>(D)</small>
| rowspan=3 | J. Twing<br/>Brooks <small>(D)</small>
| rowspan=2 | M. Clyde<br/>Kelly <small>(R)</small>
| rowspan=2 | Michael J.<br/>Muldowney<br/><small>(R)</small>
| rowspan=4 | Henry<br/>Ellenbogen<br/><small>(D)</small>
| rowspan=5 | Matthew<br/>A. Dunn<br/><small>(D)</small>
| rowspan=2 | <br/>(1933–1935)
|- style="height:2em"
| rowspan=3 | Oliver W.<br/>Frey <small>(D)</small>
|- style="height:3em"
| | William H.<br/>Wilson <small>(R)</small>
| | Clare G.<br/>Fenerty <small>(R)</small>
| rowspan=3 | J.<br/>Burrwood<br/>Daly <small>(D)</small>
| rowspan=2 | Frank J. G.<br/>Dorsey <small>(D)</small>
| rowspan=2 | Michael J.<br/>Stack <small>(D)</small>
| rowspan=2 | James H.<br/>Gildea <small>(D)</small>
| | Charles E.<br/>Dietrich <small>(D)</small>
| | Denis J.<br/>Driscoll <small>(D)</small>
| rowspan=2 | Don<br/>Hilary<br/>Gingery<br/><small>(D)</small>
| rowspan=2 | Charles R.<br/>Eckert <small>(D)</small>
| rowspan=2 | Joseph<br/>Anthony<br/>Gray <small>(D)</small>
| rowspan=2 | James L.<br/>Quinn <small>(D)</small>
| | Theodore L.<br/>Moritz <small>(D)</small>
| <br/>(1935–1937)
|- style="height:3em"
| rowspan=4 | Leon<br/>Sacks<br/><small>(D)</small>
| rowspan=4 | James P.<br/>McGranery<br/><small>(D)</small>
| rowspan=4 | Michael J.<br/>Bradley<br/><small>(D)</small>
| | Ira W.<br/>Drew <small>(D)</small>
| rowspan=3 | J. Harold<br/>Flannery<br/><small>(D)</small>
| rowspan=4 | Guy L.<br/>Moser <small>(D)</small>
| rowspan=4 | Albert G.<br/>Rutherford<br/><small>(R)</small>
| | Guy J.<br/>Swope <small>(D)</small>
| rowspan=4 | Benjamin<br/>Jarrett <small>(R)</small>
| rowspan=2 | Robert G.<br/>Allen <small>(D)</small>
| | Peter J.<br/>De Muth <small>(D)</small>
| rowspan=4 | Herman P.<br/>Eberharter<br/><small>(D)</small>
| <br/>(1937–1939)
|- style="height:3em"
| | Fred C.<br/>Gartner <small>(R)</small>
| rowspan=3 | Francis J.<br/>Myers <small>(D)</small>
| | George P.<br/>Darrow <small>(R)</small>
| rowspan=3 | Charles L.<br/>Gerlach <small>(R)</small>
| rowspan=3 | Ivor D.<br/>Fenton<br/><small>(R)</small>
| rowspan=3 | Richard<br/>M.<br/>Simpson<br/><small>(R)</small>
| rowspan=3 | John C.<br/>Kunkel<br/><small>(R)</small>
| | Chester H.<br/>Gross <small>(R)</small>
| rowspan=3 | James E.<br/>Van Zandt<br/><small>(R)</small>
| rowspan=3 | Louis E.<br/>Graham<br/><small>(R)</small>
| rowspan=3 | Harve<br/>Tibbott<br/><small>(R)</small>
| rowspan=3 | Robert L.<br/>Rodgers<br/><small>(R)</small>
| | Robert J.<br/>Corbett <small>(R)</small>
| | John<br/>McDowell <small>(R)</small>
| rowspan=2 | Joseph A.<br/>McArdle<br/><small>(D)</small>
| <br/>(1939–1941)
|- style="height:2em"
| rowspan=2 | John E.<br/>Sheridan<br/><small>(D)</small>
| rowspan=2 | Francis R.<br/>Smith <small>(D)</small>
| rowspan=2 | Hugh<br/>Scott <small>(R)</small>
| rowspan=2 | Harry L.<br/>Haines <small>(D)</small>
| rowspan=2 | Augustine<br/>B. Kelley<br/><small>(D)</small>
| rowspan=2 | Thomas E.<br/>Scanlon <small>(D)</small>
| rowspan=2 | Samuel A.<br/>Weiss <small>(D)</small>
| rowspan=2 | James A.<br/>Wright<br/><small>(D)</small>
| rowspan=2 | <br/>(1941–1943)
|- style="height:3em"
| | Veronica G.<br/>Boland <small>(D)</small>
| | Thomas B.<br/>Miller <small>(R)</small>
| | Elmer J.<br/>Holland <small>(D)</small>
|}
</div>
1943–1953: 33 seats
Following the 1940 census, the delegation lost one seat. For the 78th Congress, there were 32 districts and 1 at-large seat. Starting with the 79th Congress, however, there were 33 districts.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.08em;"
! Congress
|- style="white-space:nowrap; height:7.6em;"
|<br/>(1943–1945)
|- style="white-space:nowrap; height:5.72em"
| <br/>(1945–1947)
|- style="white-space:nowrap; height:3em"
|<br/>(1947–1949)
|- style="white-space:nowrap; height:3em"
|<br/>(1949–1951)
|- style="white-space:nowrap; height:7.2em"
|<br/>(1951–1953)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=33 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan="3" | James A.<br/>Gallagher <small>(R)</small>
| | James P.<br/>McGranery <small>(D)</small>
| rowspan="5" | Michael<br/>J.<br/>Bradley<br/><small>(D)</small>
| rowspan="5" | John E.<br/>Sheridan<br/><small>(D)</small>
| rowspan="3" | C. Frederick<br/>Pracht <small>(R)</small>
| rowspan="3" | Francis J.<br/>Myers <small>(D)</small>
| rowspan="3" | Hugh<br/>Scott <small>(R)</small>
| rowspan="3" | James<br/>Wolfenden <small>(R)</small>
| rowspan="3" | Charles<br/>L.<br/>Gerlach<br/><small>(R)</small>
| rowspan="3" | J. Roland<br/>Kinzer <small>(R)</small>
| rowspan="3" | John W.<br/>Murphy<br/><small>(D)</small>
| rowspan="3" | Thomas<br/>B.<br/>Miller<br/><small>(R)</small>
| rowspan="3" | Ivor D.<br/>Fenton <small>(R)</small>
| rowspan="3" | Daniel K.<br/>Hoch <small>(D)</small>
| rowspan="3" | Wilson<br/>D.<br/>Gillette<br/><small>(R)</small>
| rowspan="3" | Thomas<br/>E.<br/>Scanlon<br/><small>(D)</small>
| rowspan="3" | J. William<br/>Ditter <small>(R)</small>
| rowspan="3" | Richard M.<br/>Simpson<br/><small>(R)</small>
| rowspan="3" | John C.<br/>Kunkel<br/><small>(R)</small>
| rowspan="3" | Leon H.<br/>Gavin<br/><small>(R)</small>
| rowspan="3" | Francis E.<br/>Walter<br/><small>(D)</small>
| rowspan="3" | Chester H.<br/>Gross <small>(R)</small>
| rowspan="3" | James E.<br/>Van Zandt <small>(R)</small>
| rowspan="3" | J. Buell<br/>Snyder<br/><small>(D)</small>
| rowspan="3" | Grant<br/>Furlong<br/><small>(D)</small>
| rowspan="3" | Louis E.<br/>Graham<br/><small>(R)</small>
| rowspan="3" | Harve<br/>Tibbott<br/><small>(R)</small>
| rowspan="3" | Augustine<br/>B.<br/>Kelley <small>(D)</small>
| rowspan="3" | Robert L.<br/>Rodgers <small>(R)</small>
| rowspan="3" | Samuel<br/>A.<br/>Weiss<br/><small>(D)</small>
| rowspan="3" | Herman P.<br/>Eberharter<br/><small>(D)</small>
| rowspan="3" | James A.<br/>Wright <small>(D)</small>
| rowspan=2 | William I.<br/>Troutman<br/><small>(R)</small>
| rowspan="3" | <br/>(1943–1945)
|- style="height:2em"
| rowspan="2" | Joseph M.<br/>Pratt <small>(R)</small>
|- style="height:2em"
!
|- style="height:2em"
| rowspan=2 | Bill<br/>Barrett <small>(D)</small>
| rowspan=2 | William T.<br/>Granahan <small>(D)</small>
| rowspan=2 | William J.<br/>Green Jr. <small>(D)</small>
| rowspan=2 | Herbert J.<br/>McGlinchey<br/><small>(D)</small>
| rowspan=2 | James<br/>Wolfenden<br/><small>(R)</small>
| rowspan=3 | Charles L.<br/>Gerlach <small>(R)</small>
| rowspan=2 | J. Roland<br/>Kinzer<br/><small>(R)</small>
| rowspan=2 | John W.<br/>Murphy<br/><small>(D)</small>
| rowspan=2 | Daniel<br/>Flood <small>(D)</small>
| rowspan="6" | Ivor D.<br/>Fenton<br/><small>(R)</small>
| rowspan=2 | Daniel K.<br/>Hoch <small>(D)</small>
| rowspan="5" | Wilson<br/>D.<br/>Gillette<br/><small>(R)</small>
| rowspan=4 | Robert<br/>F.<br/>Rich <small>(R)</small>
| rowspan="6" | Samuel K.<br/>McConnell<br/>Jr. <small>(R)</small>
| rowspan="6" | Richard<br/>M.<br/>Simpson<br/><small>(R)</small>
| rowspan=4 | John C.<br/>Kunkel <small>(R)</small>
| rowspan="6" | Leon H.<br/>Gavin<br/><small>(R)</small>
| rowspan="6" | Francis E.<br/>Walter<br/><small>(D)</small>
| rowspan=3 | Chester<br/>H.<br/>Gross <small>(R)</small>
| rowspan=2 | D. Emmert<br/>Brumbaugh<br/><small>(R)</small>
| | J. Buell Snyder <small>(D)</small>
| rowspan="6" | Thomas<br/>E.<br/>Morgan<br/><small>(D)</small>
| rowspan="6" | Louis E.<br/>Graham<br/><small>(R)</small>
| rowspan=3 | Harve<br/>Tibbott<br/><small>(R)</small>
| rowspan="6" | Augustine<br/>B.<br/>Kelley <small>(D)</small>
| rowspan=2 | Robert L.<br/>Rodgers<br/><small>(R)</small>
| rowspan=2 | Howard E.<br/>Campbell <small>(R)</small>
| rowspan="6" | Robert J.<br/>Corbett<br/><small>(R)</small>
| rowspan="6" | James G.<br/>Fulton <small>(R)</small>
| rowspan="6" | Herman P.<br/>Eberharter<br/><small>(D)</small>
| rowspan=2 | Samuel A.<br/>Weiss <small>(D)</small>
| rowspan=2 | <br/>(1945–1947)
|- style="height:3em"
| | Carl Henry<br/>Hoffman <small>(R)</small>
|- style="height:3em"
| | James A.<br/>Gallagher <small>(R)</small>
| | Robert N.<br/>McGarvey <small>(R)</small>
| rowspan="4" | Hardie<br/>Scott <small>(R)</small>
| | Franklin J.<br/>Maloney <small>(R)</small>
| | George W.<br/>Sarbacher Jr. <small>(R)</small>
| rowspan="4" | Hugh<br/>Scott <small>(R)</small>
| | E. Wallace<br/>Chadwick <small>(R)</small>
| rowspan="4" | Paul B.<br/>Dague<br/><small>(R)</small>
| | James P.<br/>Scoblick <small>(R)</small>
| | Mitchell<br/>Jenkins <small>(R)</small>
| | Frederick A.<br/>Muhlenberg <small>(R)</small>
| rowspan="4" | James E.<br/>Van Zandt<br/><small>(R)</small>
| | William J.<br/>Crow <small>(R)</small>
| rowspan="4" | Carroll D.<br/>Kearns<br/><small>(R)</small>
| | John<br/>McDowell <small>(R)</small>
| rowspan=3 | Frank<br/>Buchanan<br/><small>(D)</small>
| <br/>(1947–1949)
|- style="height:3em"
| rowspan="3" | Bill<br/>Barrett <small>(D)</small>
| rowspan="3" | William T.<br/>Granahan <small>(D)</small>
| rowspan="3" | Earl<br/>Chudoff<br/><small>(D)</small>
| rowspan="3" | William J.<br/>Green Jr. <small>(D)</small>
| rowspan="3" | Benjamin F.<br/>James <small>(R)</small>
| | Franklin H.<br/>Lichtenwalter <small>(R)</small>
| rowspan="3" | Harry P.<br/>O'Neill <small>(D)</small>
| rowspan="3" | Daniel<br/>Flood <small>(D)</small>
| rowspan="3" | George M.<br/>Rhodes <small>(D)</small>
| rowspan="3" | James F.<br/>Lind <small>(D)</small>
| | Anthony<br/>Cavalcante <small>(D)</small>
| | Robert L.<br/>Coffey <small>(D)</small>
| | Harry J.<br/>Davenport <small>(D)</small>
| <br/>(1949–1951)
|- style="height:3em"
| | Albert C.<br/>Vaughn <small>(R)</small>
| rowspan="2" | Alvin<br />Bush <small>(R)</small>
| rowspan="2" | Walter M.<br />Mumma <small>(R)</small>
| rowspan="2" | Edward L.<br />Sittler Jr. <small>(R)</small>
| rowspan="2" | John P.<br />Saylor <small>(R)</small>
| rowspan="2" | Harmar D.<br />Denny Jr. <small>(R)</small>
| rowspan="2" | <br />(1951–1953)
|-
| | Karl C. King <small>(R)</small>
| | Joseph L.<br />Carrigg <small>(R)</small>
| | Vera<br/>Buchanan <small>(D)</small>
|}
</div>
1953–1963: 30 seats
Following the 1950 census, the delegation lost three seats.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.08em;"
! Congress
|- style="white-space:nowrap; height:3em;"
|<br/>(1953–1955)
|- style="white-space:nowrap; height:3em"
|<br/>(1955–1957)
|- style="white-space:nowrap; height:3em"
|<br/>(1957–1959)
|- style="white-space:nowrap; height:5.62em"
|<br/>(1959–1961)
|- style="white-space:nowrap; height:5.2em"
|<br/>(1961–1963)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=30 | District
! rowspan=2 | Cong­ress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:2em"
| rowspan=6 | Bill<br/>Barrett<br/><small>(D)</small>
| rowspan=2 | William T.<br/>Granahan<br/><small>(D)</small>
| rowspan=6 | James<br/>A.<br/>Byrne<br/><small>(D)</small>
| rowspan=3 | Earl<br/>Chudoff<br/><small>(D)</small>
| rowspan=6 | William<br/>J.<br/>Green<br/>Jr. <small>(D)</small>
| rowspan=3 | Hugh<br/>Scott<br/><small>(R)</small>
| rowspan=3 | Benjamin<br/>F.<br/>James <small>(R)</small>
| rowspan=2 | Karl<br/>C.<br/>King <small>(R)</small>
| rowspan=6 | Paul<br/>B.<br/>Dague<br/><small>(R)</small>
| rowspan=3 | Joseph<br/>L.<br/>Carrigg <small>(R)</small>
| | Edward<br/>Bonin <small>(R)</small>
| rowspan=6 | Ivor<br/>D.<br/>Fenton<br/><small>(R)</small>
| rowspan=3 | Samuel K.<br/>McConnell<br/>Jr. <small>(R)</small>
| rowspan=6 | George<br/>M.<br/>Rhodes<br/><small>(D)</small>
| rowspan=6 | Francis<br/>E.<br/>Walter<br/><small>(D)</small>
| rowspan=6 | Walter<br/>M.<br/>Mumma<br/><small>(R)</small>
| rowspan=5 | Alvin<br/>Bush<br/><small>(R)</small>
| rowspan=4 | Richard<br/>M.<br/>Simpson<br/><small>(R)</small>
| | S. Walter<br/>Stauffer <small>(R)</small>
| rowspan=6 | James<br/>E.<br/>Van<br/>Zandt<br/><small>(R)</small>
| rowspan=3 | Augustine<br/>B.<br/>Kelley <small>(D)</small>
| rowspan=6 | John<br/>P.<br/>Saylor<br/><small>(R)</small>
| rowspan=6 | Leon<br/>H.<br/>Gavin<br/><small>(R)</small>
| rowspan=6 | Carroll<br/>D.<br/>Kearns<br/><small>(R)</small>
| | Louis E.<br/>Graham <small>(R)</small>
| rowspan=6 | Thomas<br/>E.<br/>Morgan<br/><small>(D)</small>
| rowspan=6 | James<br/>G.<br/>Fulton<br/><small>(R)</small>
| rowspan=3 | Herman P.<br/>Eberharter<br/><small>(D)</small>
| rowspan=6 | Robert<br/>J.<br/>Corbett<br/><small>(R)</small>
| rowspan=2 | Vera<br/>Buchanan<br/><small>(D)</small>
| <br/>(1953–1955)
|- style="height:2em"
| rowspan=5 | Daniel<br/>Flood<br/><small>(D)</small>
| | James M.<br/>Quigley <small>(D)</small>
| rowspan=5 | Frank<br/>M.<br/>Clark<br/><small>(D)</small>
| <br/>(1955–1957)
|- style="height:2em"
| rowspan=4 | Kathryn<br/>E.<br/>Granahan<br/><small>(D)</small>
| rowspan=4 | Willard<br/>S.<br/>Curtin<br/><small>(R)</small>
| | S. Walter<br/>Stauffer <small>(R)</small>
| rowspan=4 | Elmer<br/>J.<br/>Holland<br/><small>(D)</small>
| <br/>(1957–1959)
|- style="height:2em"
| rowspan=3 | Robert<br/>N. C.<br/>Nix Sr.<br/><small>(D)</small>
| rowspan=3 | Herman<br/>Toll <small>(D)</small>
| rowspan=3 | William<br/>H.<br/>Milliken<br/>Jr. <small>(R)</small>
| rowspan=2 | Stanley A.<br/>Prokop <small>(D)</small>
| rowspan=2 | John A.<br/>Lafore<br/>Jr. <small>(R)</small>
| rowspan=2 | James M.<br/>Quigley <small>(D)</small>
| rowspan=3 | John<br/>Herman<br/>Dent <small>(D)</small>
| rowspan=3 | William<br/>S.<br/>Moorhead<br/><small>(D)</small>
| rowspan=2 | <br/>(1959–1961)
|- style="height:2em"
| | Douglas H.<br/>Elliott <small>(R)</small>
|- style="height:2em"
| | William<br/>Scranton<br/><small>(R)</small>
| | Richard<br/>Schweiker<br/><small>(R)</small>
| | Herman T.<br/>Schneebeli<br/><small>(R)</small>
| | J. Irving<br/>Whalley<br/><small>(R)</small>
| | George A.<br/>Goodling<br/><small>(R)</small>
| <br/>(1961–1963)
|}
</div>
1963–1973: 27 seats
Following the 1960 census, the delegation lost three seats.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.06em;"
! Congress
|- style="white-space:nowrap;"
|<br/>(1963–1965)
|- style="white-space:nowrap;"
|<br/>(1965–1967)
|- style="white-space:nowrap;"
|<br/>(1967–1969)
|- style="white-space:nowrap;"
|<br/>(1969–1971)
|- style="white-space:nowrap;"
|<br/>(1971–1973)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=27 | District
! rowspan=2 | Cong­ress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=5 | Bill<br/>Barrett<br/><small>(D)</small>
| rowspan=5 | Robert<br/>Nix<br/><small>(D)</small>
| rowspan=5 | James<br/>A.<br/>Byrne<br/><small>(D)</small>
| rowspan=2 | Herman<br/>Toll <small>(D)</small>
| | William J.<br/>Green Jr. <small>(D)</small>
| rowspan=3 | George<br/>M.<br/>Rhodes<br/><small>(D)</small>
| | William H.<br/>Milliken Jr. <small>(R)</small>
| rowspan=2 | Willard<br/>S.<br/>Curtin<br/><small>(R)</small>
| rowspan=2 | Paul B.<br/>Dague <small>(R)</small>
| rowspan=5 | Joseph<br/>M.<br/>McDade<br/><small>(R)</small>
| rowspan=5 | Daniel<br/>Flood<br/><small>(D)</small>
| rowspan=5 | J. Irving<br/>Whalley<br/><small>(R)</small>
| rowspan=3 | Richard<br/>Schweiker<br/><small>(R)</small>
| rowspan=5 | William S.<br/>Moorhead<br/><small>(D)</small>
| rowspan=5 | Fred B.<br/>Rooney<br/><small>(D)</small>
| rowspan=2 | John C.<br/>Kunkel<br/><small>(R)</small>
| rowspan=5 | Herman T.<br/>Schneebeli<br/><small>(R)</small>
| rowspan=5 | Bob<br/>Corbett<br/><small>(R)</small>
| | George A.<br/>Goodling <small>(R)</small>
| rowspan=3 | Elmer J.<br/>Holland<br/><small>(D)</small>
| rowspan=5 | John<br/>Herman<br/>Dent <small>(D)</small>
| rowspan=5 | John<br/>P.<br/>Saylor<br/><small>(R)</small>
| rowspan=5 | Albert<br/>W.<br/>Johnson<br/><small>(R)</small>
| | James D.<br/>Weaver <small>(R)</small>
| rowspan=5 | Frank<br/>M.<br/>Clark<br/><small>(D)</small>
| rowspan=5 | Thomas<br/>E.<br/>Morgan<br/><small>(D)</small>
| rowspan=4 | James G.<br/>Fulton <small>(R)</small>
| <br/>(1963–1965)
|- style="height:3em"
| rowspan=4 | Bill<br/>Green<br/>III <small>(D)</small>
| | George<br/>Watkins <small>(R)</small>
| | Nathaniel<br/>Craley <small>(D)</small>
| rowspan=4 | Joe<br/>Vigorito<br/><small>(D)</small>
| <br/>(1965–1967)
|- style="height:3em"
| rowspan=3 | Joshua<br/>Eilberg<br/><small>(D)</small>
| rowspan=3 | Lawrence G.<br/>Williams <small>(R)</small>
| rowspan=3 | Edward<br/>Biester<br/><small>(R)</small>
| rowspan=2 | George<br/>Watkins<br/><small>(R)</small>
| rowspan=3 | Edwin D.<br/>Eshleman<br/><small>(R)</small>
| rowspan=3 | George A.<br/>Goodling <small>(R)</small>
| <br/>(1967–1969)
|- style="height:3em"
| rowspan=2 | Gus<br/>Yatron<br/><small>(D)</small>
| rowspan=2 | Lawrence<br/>Coughlin<br/><small>(R)</small>
| rowspan=2 | Joseph M.<br/>Gaydos<br/><small>(D)</small>
| <br/>(1969–1971)
|- style="height:3em"
| | John H.<br/>Ware III <small>(R)</small>
| | William S.<br/>Conover <small>(R)</small>
| <br/>(1971–1973)
|}
</div>
1973–1983: 25 seats
Following the 1970 census, the delegation lost two seats.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.08em;"
! Congress
|- style="white-space:nowrap; height:3em;"
|<br/>(1973–1975)
|- style="white-space:nowrap; height:3em"
| <br/>(1975–1977)
|- style="white-space:nowrap; height:3em"
|<br/>(1977–1979)
|- style="white-space:nowrap; height:3em"
|<br/>(1979–1981)
|- style="white-space:nowrap; height:5.62em"
|<br/>(1981–1983)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=25 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| rowspan=2 | Bill<br/>Barrett<br/><small>(D)</small>
| rowspan=3 | Robert<br/>Nix <small>(D)</small>
| rowspan=2 | Bill<br/>Green III<br/><small>(D)</small>
| rowspan=3 | Joshua<br/>Eilberg<br/><small>(D)</small>
| | John H.<br/>Ware III <small>(R)</small>
| rowspan="6" | Gus<br/>Yatron<br/><small>(D)</small>
| | Lawrence G.<br/>Williams <small>(R)</small>
| rowspan=2 | Edward<br/>Biester<br/><small>(R)</small>
| rowspan="6" | Bud<br/>Shuster<br/><small>(R)</small>
| rowspan="6" | Joseph<br/>M.<br/>McDade<br/><small>(R)</small>
| rowspan=4 | Daniel<br/>Flood<br/><small>(D)</small>
| | John P.<br/>Saylor <small>(R)</small>
| rowspan="6" | Lawrence<br/>Coughlin<br/><small>(R)</small>
| rowspan=4 | William<br/>S.<br/>Moorhead<br/><small>(D)</small>
| rowspan=3 | Fred B.<br/>Rooney<br/><small>(D)</small>
| rowspan=2 | Edwin D.<br/>Eshleman<br/><small>(R)</small>
| rowspan=2 | Herman<br/>T.<br/>Schneebeli<br/><small>(R)</small>
| rowspan=2 | John<br/>Heinz <small>(R)</small>
| | George A.<br/>Goodling <small>(R)</small>
| rowspan="6" | Joseph<br/>M.<br/>Gaydos<br/><small>(D)</small>
| rowspan=3 | John<br/>Herman<br/>Dent<br/><small>(D)</small>
| rowspan=2 | Thomas<br/>E.<br/>Morgan<br/><small>(D)</small>
| rowspan=2 | Albert W.<br/>Johnson <small>(R)</small>
| rowspan=2 | Joe<br/>Vigorito<br/><small>(D)</small>
| | Frank M.<br/>Clark <small>(D)</small>
| <br/>(1973–1975)
|- style="height:3em"
| rowspan="5" | Dick<br/>Schulze<br/><small>(R)</small>
| rowspan="5" | Bob<br/>Edgar <small>(D)</small>
| rowspan="5" | John<br/>Murtha<br/><small>(D)</small>
| rowspan="5" | Bill<br/>Goodling<br/><small>(R)</small>
| rowspan=2 | Gary A.<br/>Myers <small>(R)</small>
| <br/>(1975–1977)
|- style="height:3em"
| rowspan=2 | Ozzie<br/>Myers<br/><small>(D)</small>
| rowspan=2 | Raymond<br/>Lederer<br/><small>(D)</small>
| rowspan=2 | Peter H.<br/>Kostmayer<br/><small>(D)</small>
| rowspan="4" | Bob<br/>Walker<br/><small>(R)</small>
| rowspan="4" | Allen E.<br/>Ertel <small>(D)</small>
| rowspan="4" | Doug<br/>Walgren<br/><small>(D)</small>
| rowspan="4" | Austin<br/>Murphy<br/><small>(D)</small>
| | Joseph S.<br/>Ammerman <small>(D)</small>
| rowspan="4" | Marc L.<br/>Marks<br/><small>(R)</small>
| <br/>(1977–1979)
|- style="height:3em"
| rowspan="3" | William<br/>Gray <small>(D)</small>
| rowspan="3" | Charles F.<br/>Dougherty<br/><small>(R)</small>
| rowspan="3" | Don<br/>Ritter<br/><small>(R)</small>
| rowspan="3" | Donald<br/>A.<br/>Bailey<br/><small>(D)</small>
| rowspan="3" | William<br/>Clinger <small>(R)</small>
| rowspan=2 | Eugene<br/>Atkinson <small>(D)</small>
| <br/>(1979–1981)
|- style="height:2em"
| rowspan="2" | Tom<br/>Foglietta<br/><small>(D)</small>
| rowspan="2" | Joe<br/>Smith<br/><small>(D)</small>
| rowspan="2" | James K.<br/>Coyne III<br/><small>(R)</small>
| rowspan="2" | Jim<br/>Nelligan<br/><small>(R)</small>
| rowspan="2" | William J.<br/>Coyne <small>(D)</small>
| rowspan="2" | <br/>(1981–1983)
|- style="height:2em"
| | Eugene<br/>Atkinson <small>(R)</small>
|}
</div>
1983–1993: 23 seats
Following the 1980 census, the delegation lost two seats.
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! rowspan=2 | Congress
! colspan=23 | District
! rowspan=2 | Cong­ress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| <br/>(1983–1985)
| rowspan=5 | Tom<br/>Foglietta<br/><small>(D)</small>
| rowspan=5 | William<br/>Gray<br/><small>(D)</small>
| rowspan=5 | Bob<br/>Borski<br/><small>(D)</small>
| rowspan=5 | Joe<br/>Kolter<br/><small>(D)</small>
| rowspan=5 | Dick<br/>Schulze<br/><small>(R)</small>
| rowspan=5 | Gus<br/>Yatron<br/><small>(D)</small>
| rowspan=2 | Bob<br/>Edgar<br/><small>(D)</small>
| rowspan=5 | Peter H.<br/>Kost­mayer<br/><small>(D)</small>
| rowspan=5 | Bud<br/>Shuster<br/><small>(R)</small>
| rowspan=5 | Joseph<br/>M.<br/>McDade<br/><small>(R)</small>
| | Frank<br/>Harrison <small>(D)</small>
| rowspan=5 | John<br/>Murtha<br/><small>(D)</small>
| rowspan=5 | Lawrence<br/>Coughlin<br/><small>(R)</small>
| rowspan=5 | William<br/>J.<br/>Coyne<br/><small>(D)</small>
| rowspan=5 | Don<br/>Ritter <small>(R)</small>
| rowspan=5 | Bob<br/>Walker<br/><small>(R)</small>
| rowspan=5 | George<br/>Gekas<br/><small>(R)</small>
| rowspan=4 | Doug<br/>Walgren<br/><small>(D)</small>
| rowspan=5 | Bill<br/>Good­ling<br/><small>(R)</small>
| rowspan=5 | Joseph<br/>M.<br/>Gaydos<br/><small>(D)</small>
| rowspan=5 | Tom<br/>Ridge<br/><small>(R)</small>
| rowspan=5 | Austin<br/>Murphy<br/><small>(D)</small>
| rowspan=5 | William<br/>Clinger<br/><small>(R)</small>
| <br/>(1983–1985)
|- style="height:3em"
| <br/>(1985–1987)
| rowspan=4 | Paul<br/>Kanjor­ski<br/><small>(D)</small>
| <br/>(1985–1987)
|- style="height:3em"
| <br/>(1987–1989)
| rowspan=3 | Curt<br/>Weldon <br/><small>(R)</small>
| <br/>(1987–1989)
|- style="height:3em"
| <br/>(1989–1991)
| <br/>(1989–1991)
|- style="height:3em"
| <br/>(1991–1993)
| | Rick<br/>Santorum <small>(R)</small>
| <br/>(1991–1993)
|}
</div>
1993–2003: 21 seats
Following the 1990 census, the delegation lost two seats.
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! rowspan=2 | Congress
! colspan=21 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| <br/>(1993–1995)
| rowspan=3 | Tom<br/>Foglietta<br/><small>(D)</small>
| | Lucien<br/>Blackwell <small>(D)</small>
| rowspan=6 | Bob<br/>Borski<br/><small>(D)</small>
| rowspan=5 | Ron<br/>Klink <small>(D)</small>
| rowspan=2 | William<br/>Clinger <small>(R)</small>
| rowspan=6 | Tim<br/>Holden<br/><small>(D)</small>
| rowspan=6 | Curt<br/>Weldon<br/><small>(R)</small>
| rowspan=6 | Jim<br/>Greenwood<br/><small>(R)</small>
| rowspan=6 | Bud<br/>Shuster<br/><small>(R)</small>
| rowspan=4 | Joseph<br/>M.<br/>McDade<br/><small>(R)</small>
| rowspan=6 | Paul<br/>Kanjorski<br/><small>(D)</small>
| rowspan=6 | John<br/>Murtha<br/><small>(D)</small>
| | Marjorie<br/>Margolies <small>(D)</small>
| rowspan=6 | William J.<br/>Coyne <small>(D)</small>
| rowspan=4 | Paul<br/>McHale<br/><small>(D)</small>
| rowspan=2 | Bob<br/>Walker<br/><small>(R)</small>
| rowspan=6 | George<br/>Gekas<br/><small>(R)</small>
| | Rick<br/>Santorum <small>(R)</small>
| rowspan=5 | Bill<br/>Goodling<br/><small>(R)</small>
| | Austin<br/>Murphy <small>(D)</small>
| | Tom<br/>Ridge <small>(R)</small>
| <br/>(1993–1995)
|- style="height:3em"
| <br/>(1995–1997)
| rowspan=5 | Chaka<br/>Fattah <small>(D)</small>
| rowspan=3 | Jon D.<br/>Fox <small>(R)</small>
| rowspan=5 | Mike<br/>Doyle <small>(D)</small>
| rowspan=5 | Frank<br/>Mascara<br/><small>(D)</small>
| rowspan=5 | Phil<br/>English<br/><small>(R)</small>
| <br/>(1995–1997)
|- style="height:2em"
| rowspan=2 | <br/>(1997–1999)
| rowspan=4 | John<br/>Peterson<br/><small>(R)</small>
| rowspan=4 | Joe<br/>Pitts<br/><small>(R)</small>
| rowspan=2 | <br/>(1997–1999)
|- style="height:2em"
| rowspan=3 | Bob<br/>Brady<br/><small>(D)</small>
|- style="height:3em"
| <br/>(1999–2001)
| rowspan=2 | Don<br/>Sherwood<br/><small>(R)</small>
| rowspan=2 | Joe<br/>Hoeffel <small>(D)</small>
| rowspan=2 | Pat<br/>Toomey<br/><small>(R)</small>
| <br/>(1999–2001)
|- style="height:3em"
| <br/>(2001–2003)
| | Melissa<br/>Hart <small>(R)</small>
| | Todd<br/>Platts <small>(R)</small>
| <br/>(2001–2003)
|}
</div>
2003–2013: 19 seats
Following the 2000 census, the delegation lost two seats.
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! rowspan=2 | Congress
! colspan=19 | District
! rowspan=2 | Congress
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| <br/>(2003–2005)
| rowspan=6 | Bob<br/>Brady<br/><small>(D)</small>
| rowspan=6 | Chaka<br/>Fattah<br/><small>(D)</small>
| rowspan=3 | Phil<br/>English <small>(R)</small>
| rowspan=2 | Melissa<br/>Hart<br/><small>(R)</small>
| rowspan=3 | John<br/>Peterson<br/><small>(R)</small>
| rowspan=6 | Jim<br/>Gerlach<br/><small>(R)</small>
| rowspan=2 | Curt<br/>Weldon<br/><small>(R)</small>
| | Jim Green-<br/>wood <small>(R)</small>
| rowspan=6 | Bill<br/>Shuster<br/><small>(R)</small>
| rowspan=2 | Don<br/>Sherwood<br/><small>(R)</small>
| rowspan=5 | Paul<br/>Kanjorski<br/><small>(D)</small>
| rowspan=4 | John<br/>Murtha<br/><small>(D)</small>
| | Joe<br/>Hoeffel <small>(D)</small>
| rowspan=6 | Mike<br/>Doyle<br/><small>(D)</small>
| | Pat<br/>Toomey <small>(R)</small>
| rowspan=6 | Joe<br/>Pitts<br/><small>(R)</small>
| rowspan=6 | Tim<br/>Holden<br/><small>(D)</small>
| rowspan=6 | Tim<br/>Murphy<br/><small>(R)</small>
| rowspan=6 | Todd<br/>Platts<br/><small>(R)</small>
| <br/>(2003–2005)
|- style="height:3em"
| <br/>(2005–2007)
| | Mike<br/>Fitzpatrick <small>(R)</small>
| rowspan=5 | Allyson<br/>Schwartz<br/><small>(D)</small>
| rowspan=5 | Charlie<br/>Dent<br/><small>(R)</small>
| <br/>(2005–2007)
|- style="height:3em"
| <br/>(2007–2009)
| rowspan=4 | Jason<br/>Altmire<br/><small>(D)</small>
| rowspan=3 | Joe<br/>Sestak<br/><small>(D)</small>
| rowspan=3 | Patrick<br/>Murphy<br/><small>(D)</small>
| rowspan=3 | Chris<br/>Carney<br/><small>(D)</small>
| <br/>(2007–2009)
|- style="height:2em"
| rowspan=2 | <br/>(2009–2011)
| rowspan=2 | Kathy Dahl-<br/>kemper <small>(D)</small>
| rowspan=3 | Glenn<br/>Thompson<br/><small>(R)</small>
| rowspan=2 | <br/>(2009–2011)
|- style="height:2em"
| rowspan=2 | Mark<br/>Critz <small>(D)</small>
|- style="height:3em"
| <br/>(2011–2013)
| | Mike<br/>Kelly <small>(R)</small>
| | Pat<br/>Meehan <small>(R)</small>
| | Mike<br/>Fitzpatrick <small>(R)</small>
| | Tom<br/>Marino <small>(R)</small>
| | Lou<br/>Barletta <small>(R)</small>
| <br/>(2011–2013)
|}
</div>
2013–2023: 18 seats
Following the 2010 census, the delegation lost one seat. With court-ordered redistricting in Pennsylvania on February 19, 2018, none of the members of congress who served in 115th Congress and were re-elected are in the same district in the 116th Congress.
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! rowspan=2 | Congress
! colspan=18 | District
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:3em"
| <br/>(2013–2015)
| rowspan=4 | Bob<br/>Brady<br/><small>(D)</small>
| | Chaka<br/>Fattah <small>(D)</small>
| rowspan=4 | Mike<br/>Kelly<br/><small>(R)</small>
| rowspan=4 | Scott<br/>Perry<br/><small>(R)</small>
| rowspan=4 | Glenn<br/>Thompson<br/><small>(R)</small>
| | Jim<br/>Gerlach <small>(R)</small>
| rowspan=3 | Pat<br/>Meehan<br/><small>(R)</small>
| rowspan=2 | Mike<br/>Fitzpatrick<br/><small>(R)</small>
| rowspan=4 | Bill<br/>Shuster<br/><small>(R)</small>
| rowspan=4 | Tom<br/>Marino<br/><small>(R)</small>
| rowspan=4 | Lou<br/>Barletta<br/><small>(R)</small>
| rowspan=4 | Keith<br/>Rothfus<br/><small>(R)</small>
| | Allyson<br/>Schwartz<br/><small>(D)</small>
| rowspan=4 | Mike<br/>Doyle<br/><small>(D)</small>
| rowspan=3 | Charlie<br/>Dent<br/><small>(R)</small>
| rowspan=2 | Joe<br/>Pitts<br/><small>(R)</small>
| rowspan=4 | Matt<br/>Cartwright<br/><small>(D)</small>
| rowspan=3 | Tim<br/>Murphy<br/><small>(R)</small>
|- style="height:3em"
| <br/>(2015–2017)
| rowspan=3 | Dwight<br/>Evans<br/><small>(D)</small>
| rowspan=3 | Ryan<br/>Costello<br/><small>(R)</small>
| rowspan=3 | Brendan<br/>Boyle<br/><small>(D)</small>
|- style="height:2em"
| rowspan=2 | <br/>(2017–2019)
| rowspan=2 | Brian<br/>Fitzpatrick<br/><small>(R)</small>
| rowspan=2 | Lloyd<br/>Smucker<br/><small>(R)</small>
|- style="height:3em"
| | Mary Gay<br/>Scanlon <small>(D)</small>
| | Susan<br/>Wild <small>(D)</small>
| | Conor<br/>Lamb <small>(D)</small>
|- style="height:3em"
| rowspan=2 | <br/>(2019–2021)
| rowspan=3 | Brian<br/>Fitzpatrick<br/><small>(R)</small>
| rowspan=3 | Brendan<br/>Boyle<br/><small>(D)</small>
| rowspan=3 | Dwight<br/>Evans<br/><small>(D)</small>
| rowspan=3 | Madeleine<br/>Dean<br/><small>(D)</small>
| rowspan=3 | Mary Gay<br/>Scanlon<br/><small>(D)</small>
| rowspan=3 | Chrissy<br/>Houlahan<br/><small>(D)</small>
| rowspan=3 | Susan<br/>Wild<br/><small>(D)</small>
| rowspan=3 | Matt<br/>Cartwright<br/><small>(D)</small>
| rowspan=3 | Dan<br/>Meuser<br/><small>(R)</small>
| rowspan=3 | Scott<br/>Perry<br/><small>(R)</small>
| rowspan=3 | Lloyd<br/>Smucker<br/><small>(R)</small>
| | Tom<br/>Marino <small>(R)</small>
| rowspan=3 | John<br/>Joyce<br/><small>(R)</small>
| rowspan=3 | Guy<br/>Reschen­thaler<br/><small>(R)</small>
| rowspan=3 | Glenn<br/>Thompson<br/><small>(R)</small>
| rowspan=3 | Mike<br/>Kelly<br/><small>(R)</small>
| rowspan=3 | Conor<br/>Lamb<br/><small>(D)</small>
| rowspan=3 | Mike<br/>Doyle<br/><small>(D)</small>
|- style="height:2em"
| rowspan=2 | Fred<br/>Keller <small>(R)</small>
|- style="height:3em"
| <br/>(2021–2023)
|}
</div>
2023–present: 17 seats
Following the 2020 census, the delegation lost one seat.
{| class="wikitable" style="float:left; margin:0; margin-right:-0.5px; margin-top:14px; text-align:center;"
|- style="white-space:nowrap; height:4.14em;"
! Congress
|- style="white-space:nowrap; height:5.27em;"
|<br/>(2023–2025)
|- style="white-space:nowrap; height:5.27em;"
|<br/>(2025–2027)
|}
<div style="overflow-x:auto; white-space:nowrap;">
{| class=wikitable style="text-align:center"
! colspan=25 | District
|-
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
|- style="height:5.27em"
| rowspan=2 | Brian<br/>Fitzpatrick<br/><small>(R)</small>
| rowspan=2 | Brendan<br/>Boyle<br/><small>(D)</small>
| rowspan=2 | Dwight<br/>Evans<br/><small>(D)</small>
| rowspan=2 | Madeleine<br/>Dean<br/><small>(D)</small>
| rowspan=2 | Mary Gay<br/>Scanlon<br/><small>(D)</small>
| rowspan=2 | Chrissy<br/>Houlahan<br/><small>(D)</small>
| rowspan=1 | Susan<br/>Wild<br/><small>(D)</small>
| rowspan=1 | Matt<br/>Cartwright<br/><small>(D)</small>
| rowspan=2 | Dan<br/>Meuser<br/><small>(R)</small>
| rowspan=2 | Scott<br/>Perry<br/><small>(R)</small>
| rowspan=2 | Lloyd<br/>Smucker<br/><small>(R)</small>
| rowspan=2 | Summer<br/>Lee<br/><small>(D)</small>
| rowspan=2 | John<br/>Joyce<br/><small>(R)</small>
| rowspan=2 | Guy<br/>Reschenthaler<br/><small>(R)</small>
| rowspan=2 | Glenn<br/>Thompson<br/><small>(R)</small>
| rowspan=2 | Mike<br/>Kelly<br/><small>(R)</small>
| rowspan=2 | Chris<br/>Deluzio<br/><small>(D)</small>
|- style="height:5.27em"
| rowspan=1 | Ryan<br/>Mackenzie<br/><small>(R)</small>
| rowspan=1 | Rob<br/>Bresnahan<br/><small>(R)</small>
|}
</div>
United States Senate
{| class="wikitable floatright" style="text-align: center;"
|-
! colspan=3 | Current U.S. senators from Pennsylvania
|-
! rowspan=2 | <br/><br/>
{| class="wikitable"
! CPVI :
|-
|
|}
! Class I senator
! Class III senator
|- style="vertical-align: top;"
| x150px<br/>Dave McCormick<br/><br>
| x150px<br/>John Fetterman<br/><br>
|-
! Party
|
|
|-
! Incumbent since
| January 3, 2025
| January 3, 2023
|}
{| class="wikitable sticky-header" style="text-align:center"
|-
! colspan="2" | Class I senator
! Congress
! colspan="2" |Class III senator
|- style="height:2em"
| | William Maclay <small>(AA)</small>
| style="background: #D3D3D3"|
| (1789–1791)
| rowspan="4" style="background: #D3D3D3"|
| rowspan=4 | Robert Morris <small>(PA)</small>
|- style="height:2em"
| | vacant
| rowspan="4" |
| (1791–1793)
|- style="height:2em"
| | Albert Gallatin <small>(AA)</small>
| rowspan=2 | (1793–1795)
|- style="height:2em"
| | James Ross <small>(PA)</small>
|- style="height:2em"
| rowspan="5" | James Ross <small>(F)</small>
| (1795–1797)
| rowspan="3" |
| rowspan=3 | William Bingham <small>(F)</small>
|- style="height:2em"
| rowspan="4" style="background: #D3D3D3"|
| (1797–1799)
|- style="height:2em"
| (1799–1801)
|- style="height:2em"
| rowspan=2 | (1801–1803)
| rowspan="4" style="background: #D3D3D3"|
| | Peter Muhlenberg <small>(DR)</small>
|- style="height:1.25em"
| rowspan=3 | George Logan <small>(DR)</small>
|- style="height:2em"
| rowspan=3 | Samuel Maclay <small>(DR)</small>
| rowspan="4" |
| (1803–1805)
|- style="height:2em"
| (1805–1807)
|- style="height:1.25em"
| rowspan=2 | (1807–1809)
| rowspan="4" |
| rowspan=4 | Andrew Gregg <small>(DR)</small>
|- style="height:1.25em"
| rowspan=4 | Michael Leib <small>(DR)</small>
|- style="height:2em"
| rowspan="4" style="background: #D3D3D3"|
| (1809–1811)
|- style="height:2em"
| (1811–1813)
|- style="height:1.25em"
| rowspan=2 | (1813–1815)
| rowspan="4" style="background: #D3D3D3"|
| rowspan=4 | Abner Lacock <small>(DR)</small>
|- style="height:1.25em"
| rowspan=4 | Jonathan Roberts <small>(DR)</small>
|- style="height:2em"
| rowspan="3" |
| (1815–1817)
|- style="height:2em"
| (1817–1819)
|- style="height:2em"
| (1819–1821)
| rowspan="3" |
| rowspan=3 | Walter Lowrie <small>(DR)</small>
|- style="height:2em"
| rowspan=2 | William Findlay <small>(DR)</small>
| rowspan="3" style="background: #D3D3D3"|
| (1821–1823)
|- style="height:2em"
| (1823–1825)
|- style="height:2em"
| | William Findlay <small>(J)</small>
| (1825–1827)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=3 | William Marks <small>(NR)</small>
|- style="height:2em"
| rowspan=3 | Isaac D. Barnard <small>(J)</small>
| rowspan="4" |
| (1827–1829)
|- style="height:2em"
| (1829–1831)
|- style="height:1.25em"
| rowspan=2 | (1831–1833)
| rowspan="5" |
| rowspan=3 | William Wilkins <small>(J)</small>
|- style="height:2em"
| | George M. Dallas <small>(J)</small>
|- style="height:1.25em"
| rowspan=3 | Samuel McKean <small>(J)</small>
| rowspan="4" style="background: #D3D3D3"|
| rowspan=2 | (1833–1835)
|- style="height:1.25em"
| rowspan=2 | James Buchanan <small>(J)</small>
|- style="height:2em"
| (1835–1837)
|- style="height:2em"
| | Samuel McKean <small>(D)</small>
| (1837–1839)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=5 | James Buchanan <small>(D)</small>
|- style="height:2em"
| rowspan=7 | Daniel Sturgeon <small>(D)</small>
| rowspan="3" |
| (1839–1841)
|- style="height:2em"
| (1841–1843)
|- style="height:2em"
| (1843–1845)
| rowspan="4" |
|- style="height:1.25em"
| rowspan="4" style="background: #D3D3D3"|
| rowspan=2 | (1845–1847)
|- style="height:1.25em"
| rowspan=2 | Simon Cameron <small>(D)</small>
|- style="height:2em"
| (1847–1849)
|- style="height:2em"
| (1849–1851)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=3 | James Cooper <small>(W)</small>
|- style="height:2em"
| rowspan=3 | Richard Brodhead <small>(D)</small>
| rowspan="3" |
| (1851–1853)
|- style="height:2em"
| (1853–1855)
|- style="height:2em"
| (1855–1857)
| rowspan="3" |
| rowspan=3 | William Bigler <small>(D)</small>
|- style="height:2em"
| rowspan=3 | Simon Cameron <small>(R)</small>
| rowspan="4" style="background: #D3D3D3"|
| (1857–1859)
|- style="height:2em"
| (1859–1861)
|- style="height:1.25em"
| rowspan=2 | (1861–1863)
| rowspan="4" style="background: #D3D3D3"|
| rowspan=4 | Edgar Cowan <small>(R)</small>
|- style="height:2em"
| | David Wilmot <small>(R)</small>
|- style="height:2em"
| rowspan=3 | Charles R. Buckalew <small>(D)</small>
| rowspan="3" |
| (1863–1865)
|- style="height:2em"
| (1865–1867)
|- style="height:2em"
| (1867–1869)
| rowspan="3" |
| rowspan=6 | Simon Cameron <small>(R)</small>
|- style="height:2em"
| rowspan=3 | John Scott <small>(R)</small>
| rowspan="3" style="background: #D3D3D3"|
| (1869–1871)
|- style="height:2em"
| (1871–1873)
|- style="height:2em"
| (1873–1875)
| rowspan="4" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan=4 | William A. Wallace <small>(D)</small>
| rowspan="4" |
| (1875–1877)
|- style="height:1.25em"
| rowspan=2 | (1877–1879)
|- style="height:1.25em"
| rowspan=10 | J. Donald Cameron <small>(R)</small>
|- style="height:2em"
| (1879–1881)
| rowspan="3" |
|- style="height:2em"
| rowspan=3 | John I. Mitchell <small>(R)</small>
| rowspan="3" style="background: #D3D3D3"|
| (1881–1883)
|- style="height:2em"
| (1883–1885)
|- style="height:2em"
| (1885–1887)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan=6 | Matthew Quay <small>(R)</small>
| rowspan="3" |
| (1887–1889)
|- style="height:2em"
| (1889–1891)
|- style="height:2em"
| (1891–1893)
| rowspan="3" |
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (1893–1895)
|- style="height:2em"
| (1895–1897)
|- style="height:2em"
| (1897–1899)
| rowspan="4" style="background: #D3D3D3"|
| rowspan=15 | Boies Penrose <small>(R)</small>
|- style="height:2em"
| | vacant
| rowspan="5" |
| rowspan=2 | (1899–1901)
|- style="height:1.25em"
| rowspan=3 | Matthew Quay <small>(R)</small>
|- style="height:2em"
| (1901–1903)
|- style="height:1.25em"
| rowspan=2 | (1903–1905)
| rowspan="4" |
|- style="height:1.25em"
| rowspan=3 | Philander C. Knox <small>(R)</small>
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (1905–1907)
|- style="height:2em"
| (1907–1909)
|- style="height:2em"
| rowspan=4 | George T. Oliver <small>(R)</small>
| (1909–1911)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan="3" |
| (1911–1913)
|- style="height:2em"
| (1913–1915)
|- style="height:2em"
| (1915–1917)
| rowspan="3" |
|- style="height:2em"
| rowspan=2 | Philander C. Knox <small>(R)</small>
| rowspan="4" style="background: #D3D3D3"|
| (1917–1919)
|- style="height:2em"
| (1919–1921)
|- style="height:2em"
| | William E. Crow <small>(R)</small>
| rowspan=2 | (1921–1923)
| rowspan="4" style="background: #D3D3D3"|
|- style="height:1.25em"
| rowspan=9 | David A. Reed <small>(R)</small>
| rowspan=3 | George W. Pepper <small>(R)</small>
|- style="height:2em"
| rowspan="3" |
| (1923–1925)
|- style="height:2em"
| (1925–1927)
|- style="height:2em"
| (1927–1929)
| rowspan="5" |
| rowspan=2 | William Scott Vare <small>(R)</small>
|- style="height:1.25em"
| rowspan="5" style="background: #D3D3D3"|
| rowspan=3 | (1929–1931)
|- style="height:2em"
| | Joseph R. Grundy <small>(R)</small>
|- style="height:1.25em"
| rowspan=8 | James J. Davis <small>(R)</small>
|- style="height:2em"
| (1931–1933)
|- style="height:2em"
| (1933–1935)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan=6 | Joseph F. Guffey <small>(D)</small>
| rowspan="3" |
| (1935–1937)
|- style="height:2em"
| (1937–1939)
|- style="height:2em"
| (1939–1941)
| rowspan="3" |
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (1941–1943)
|- style="height:2em"
| (1943–1945)
|- style="height:2em"
| (1945–1947)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=3 | Francis J. Myers <small>(D)</small>
|- style="height:2em"
| rowspan=6 | Edward Martin <small>(R)</small>
| rowspan="3" |
| (1947–1949)
|- style="height:2em"
| (1949–1951)
|- style="height:2em"
| (1951–1953)
| rowspan="3" |
| rowspan=3 | James H. Duff <small>(R)</small>
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (1953–1955)
|- style="height:2em"
| (1955–1957)
|- style="height:2em"
| (1957–1959)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=6 | Joseph S. Clark Jr. <small>(D)</small>
|- style="height:2em"
| rowspan=9 | Hugh Scott <small>(R)</small>
| rowspan="3" |
| (1959–1961)
|- style="height:2em"
| (1961–1963)
|- style="height:2em"
| (1963–1965)
| rowspan="3" |
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (1965–1967)
|- style="height:2em"
| (1967–1969)
|- style="height:2em"
| (1969–1971)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=6 | Richard Schweiker <small>(R)</small>
|- style="height:2em"
| rowspan="3" |
| (1971–1973)
|- style="height:2em"
| (1973–1975)
|- style="height:2em"
| (1975–1977)
| rowspan="3" |
|- style="height:2em"
| rowspan=8 | John Heinz <small>(R)</small>
| rowspan="3" style="background: #D3D3D3"|
| (1977–1979)
|- style="height:2em"
| (1979–1981)
|- style="height:2em"
| (1981–1983)
| rowspan="3" style="background: #D3D3D3"|
| rowspan=15 | Arlen Specter <small>(R)</small>
|- style="height:2em"
| rowspan="3" |
| (1983–1985)
|- style="height:2em"
| (1985–1987)
|- style="height:2em"
| (1987–1989)
| rowspan="4" |
|- style="height:2em"
| rowspan="4" style="background: #D3D3D3"|
| (1989–1991)
|- style="height:1.25em"
| rowspan=2 | (1991–1993)
|- style="height:1.25em"
| rowspan=2 | Harris Wofford <small>(D)</small>
|- style="height:2em"
| (1993–1995)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan=6 | Rick Santorum <small>(R)</small>
| rowspan="3" |
| (1995–1997)
|- style="height:2em"
| (1997–1999)
|- style="height:2em"
| (1999–2001)
| rowspan="3" |
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (2001–2003)
|- style="height:2em"
| (2003–2005)
|- style="height:2em"
| (2005–2007)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan=9 |Bob Casey Jr. <small>(D)</small>
| rowspan="3" |
| (2007–2009)
|- style="height:2em"
| (2009–2011)
| | Arlen Specter <small>(D)</small>
|- style="height:2em"
| (2011–2013)
| rowspan="3" |
| rowspan=6| Pat Toomey <small>(R)</small>
|- style="height:2em"
| rowspan="3" style="background: #D3D3D3"|
| (2013–2015)
|- style="height:2em"
| (2015–2017)
|- style="height:2em"
| (2017–2019)
| rowspan="3" style="background: #D3D3D3"|
|- style="height:2em"
| rowspan="3" |
| (2019–2021)
|- style="height:2em"
| (2021–2023)
|- style="height:2em"
| (2023–2025)
| rowspan="2" |
| rowspan="2" | John Fetterman <small>(D)</small>
|- style="height:2em"
| rowspan=1 |Dave McCormick <small>(R)</small>
| rowspan="1" style="background: #D3D3D3"|
| (2025–2027)
|}
Key
See also
- List of United States congressional districts
- Pennsylvania's congressional districts
- Political party strength in Pennsylvania