Alsó-Fehér (Lower Fehér) was an administrative county (comitatus) of the Kingdom of Hungary. Its territory is now in western Romania (central Transylvania). The latest capital of the county was Nagyenyed (present-day Aiud).
Geography
thumb|left|alt=Map of Alsó-Fehér county in the Kingdom of Hungary|Map of Alsó-Fehér, 1891.
Alsó-Fehér county shared borders with Hunyad, Torda-Aranyos, Kis-Küküllő, Nagy-Küküllő and Szeben counties. The rivers Mureș and Târnava flowed through the county. Its area was 3,576.5 km<sup>2</sup> around 1910.
History
Alsó-Fehér (Lower Fehér) county was formed when Fehér county was split in 1744 (the other half, , consisted entirely of enclaves between Székely and Saxon seats). In 1876, when the administrative structure of Transylvania was changed, the territory of Alsó-Fehér was modified and parts of it were annexed to the counties of Torda-Aranyos and Seben (during the same administrative reform, Felső-Fehér county was entirely abolished and merged with other counties). In 1920, the Treaty of Trianon assigned the territory of the county to Romania. Its territory lies in the present Romanian counties of Alba, Sibiu (the south-east) and Mureș (a small northeastern part).
Demographics
thumb|right|200 px|Ethnic map of the county with data of the 1910 census (see the key in the description)
{| class="wikitable"
|+ Population by mother tongue
! Census !! Total !! Romanian !! Hungarian !! German !! Other or unknown
|-
! 1880
| 178,021 || 135,439 (78.79%) || 25,818 (15.02%) || 6,972 (4.06%) || 3,667 (2.13%)
|-
! 1890
| 193,072 || 151,397 (78.41%) || 30,181 (15.63%) || 7,539 (3.90%) || 3,955 (2.05%)
|-
! 1900
| 212,352 || 166,099 (78.22%) || 36,360 (17.12%) || 7,953 (3.75%) || 1,940 (0.91%)
|-
! 1910
| 221,618 || 171,483 (77.38%) || 39,107 (17.65%) || 7,269 (3.28%) || 3,759 (1.70%)
|-
|}
{| class="wikitable"
|+ Population by religion
! Census !! Total !! Eastern Orthodox !! Greek Catholic !! Calvinist !! Roman Catholic !! Lutheran !! Jewish !! Other or unknown
|-
! 1880
| 178,021 || 76,165 (42.78%) || 66,714 (37.48%) || 16,834 (9.46%) || 8,551 (4.80%) || 5,961 (3.35%) || 2,806 (1.58%) || 990 (0.56%)
|-
! 1890
| 193,072 || 80,353 (41.62%) || 74,132 (38.40%) || 19,472 (10.09%) || 8,943 (4.63%) || 5,813 (3.01%) || 3,280 (1.70%) || 1,079 (0.56%)
|-
! 1900
| 212,352 || 87,210 (41.07%) || 80,211 (37.77%) || 21,296 (10.03%) || 11,226 (5.29%) || 7,170 (3.38%) || 3,903 (1.84%) || 1,336 (0.63%)
|-
! 1910
| 221,618 || 89,724 (40.49%) || 85,276 (38.48%) || 23,009 (10.38%) || 11,194 (5.05%) || 7,283 (3.29%) || 3,845 (1.73%) || 1,287 (0.58%)
|-
|}
Subdivisions
right|525px
In the early 20th century, the subdivisions of Alsó-Fehér county were:
{| class="wikitable"
|-
!colspan=2|Districts (járás)
|-
! District!! Capital
|-
| Alvinc||Alvinc (now Vințu de Jos)
|-
| Balázsfalva||Balázsfalva (now Blaj)
|-
| Kisenyed||Kisenyed (now Ocna Sibiului)
|-
| Magyarigen||Magyarigen (now Ighiu)
|-
| Marosújvár||Marosújvár (now Ocna Mureș)
|-
| Nagyenyed||Nagyenyed (now Aiud)
|-
|Tövis '||Tövis (now Teiuș)
|-
| Verespatak||Verespatak (now Roșia Montană)
|-
!colspan=2|Urban districts (rendezett tanácsú városok)
|-
|colspan=2|Abrudbánya (now Abrud)
|-
|colspan=2|Gyulafehérvár (now Alba Iulia)
|-
|colspan=2|Nagyenyed (now Aiud)
|-
|colspan=2|Vízakna (now Ocna Sibiului)
|}