St. John or Saint John The community took its name from Saint Johns Church. The Church was the first church in Lake County and was founded by German immigrant John Hack.
St. John is home to the Shrine of Christ's Passion, opened in 2008. An interactive display of the Passion of Christ, it contains 40 life-size statues depicting the time from the Agony in the Garden all the way to the Resurrection. It has attracted visitors from all 50 US states and more than 40 countries.
The Francis P. Keilman House was listed in the National Register of Historic Places in 2013.
Geography
According to the 2010 census, St. John has a total area of , of which (or 99.21%) is land and (or 0.79%) is water.
Demographics
Racial and ethnic composition
{| class="wikitable sortable" style="text-align:center;"
|+St. John town, Indiana – Racial and ethnic composition<br><small></small>
!Race / Ethnicity <small>(NH = Non-Hispanic)</small>
!Pop 2000
!Pop 2010
!style="background-color: #ffffb3;" |Pop 2020
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|White alone (NH)
|7,908
|13,113
|style='background: #ffffe6; |16,359
|94.35%
|88.30%
|style='background: #ffffe6; |80.57%
|-
|Black or African American alone (NH)
|11
|183
|style='background: #ffffe6; |634
|0.13%
|1.23%
|style='background: #ffffe6; |3.12%
|-
|Native American or Alaska Native alone (NH)
|14
|16
|style='background: #ffffe6; |34
|0.17%
|0.11%
|style='background: #ffffe6; |0.17%
|-
|Asian alone (NH)
|39
|183
|style='background: #ffffe6; |354
|0.47%
|1.23%
|style='background: #ffffe6; |1.74%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|0
|6
|style='background: #ffffe6; |1
|0.00%
|0.04%
|style='background: #ffffe6; |0.00%
|-
|Other race alone (NH)
|1
|8
|style='background: #ffffe6; |72
|0.01%
|0.05%
|style='background: #ffffe6; |0.35%
|-
|Mixed race or Multiracial (NH)
|57
|119
|style='background: #ffffe6; |626
|0.68%
|0.80%
|style='background: #ffffe6; |3.08%
|-
|Hispanic or Latino (any race)
|352
|1,222
|style='background: #ffffe6; |2,223
|4.20%
|8.23%
|style='background: #ffffe6; |10.95%
|-
|Total
|8,382
|14,850
|style='background: #ffffe6; |20,303
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2020 census
As of the 2020 census, St. John had a population of 20,303. The median age was 43.1 years. 24.2% of residents were under the age of 18 and 18.3% of residents were 65 years of age or older. For every 100 females, there were 95.1 males, and for every 100 females age 18 and over there were 92.8 males age 18 and over.
99.2% of residents lived in urban areas, while 0.8% lived in rural areas.
There were 7,187 households in St. John, of which 35.2% had children under the age of 18 living in them. Of all households, 71.2% were married-couple households, 8.7% were households with a male householder and no spouse or partner present, and 16.5% were households with a female householder and no spouse or partner present. About 16.8% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older. of 2010, there were 14,850 people, 5,047 households, and 4,225 families living in the town. The population density was . There were 5,201 housing units at an average density of . The racial makeup of the town was 93.5% White, 1.3% African American, 0.1% Native American, 1.3% Asian, 0.1% Pacific Islander, 2.4% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 8.2% of the population.
There were 5,047 households, of which 40.2% had children under the age of 18 living with them, 75.5% were married couples living together, 5.6% had a female householder with no husband present, 2.6% had a male householder with no wife present, and 16.3% were non-families. 13.9% of all households were made up of individuals, and 6% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.25.
The median age in the town was 40.2 years. 27.3% of residents were under the age of 18; 6.3% were between the ages of 18 and 24; 23.6% were from 25 to 44; 31.2% were from 45 to 64; and 11.3% were 65 years of age or older. The gender makeup of the town was 49.9% male and 50.1% female.
2000 census
As of the census It opened on March 31, 2026. The main station and parking lots are in Munster while overflow parking is in Dyer.
Notable people
John Kass, a columnist and radio broadcaster who comments on Chicago and Illinois politics, lives in Saint John.