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O'Fallon township, St. Clair County, IL

26,257 Population
35.1 square miles 747.8 people per square mile

Census data: ACS 2023 5-year unless noted

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Demographics

38.3 ±1.6 Median age
  • a little less than the figure in St. Clair County: 39.5 ±0.3
  • about the same as the figure in Illinois: 38.9 ±0.1

Economics

$49,015 ±$3,004 Per capita income
  • about 1.3 times the amount in St. Clair County: $37,824 ±$821
  • about 10 percent higher than the amount in Illinois: $45,104 ±$196
$92,328 ±$8,648 Median household income
  • about 1.3 times the amount in St. Clair County: $70,178 ±$2,013
  • about 10 percent higher than the amount in Illinois: $81,702 ±$363

5.8% ±2% (1,497  ±512) Persons below poverty line
  • about two-fifths of the rate in St. Clair County: 13.6% 33,836 (±1.1% / ±2,803)
  • about half the rate in Illinois: 11.7% 1,454,217 (±0.2% / ±18,530)

25.9 minutes ±2.5 (267,735  ±30,595) Mean travel time to work
  • a little higher than the figure in St. Clair County: 24.7 2,609,880 (±0.6 / ±82,123)
  • about 90 percent of the figure in Illinois: 28.1 148,440,910 (±0.1 / ±701,124)

Families

10,282 ±349 Number of households
  • St. Clair County: 101,273 ±966
  • Illinois: 5,001,904 ±7,673
2.5 ±0.1 (26,141  ±33) Persons per household
  • a little higher than the figure in St. Clair County: 2.5 250,416 (±0 / ±73)
  • about the same as the figure in Illinois: 2.5 12,414,044

7.9% ±3.4% (447  ±197) Women 15-50 who gave birth during past year
  • about 1.3 times the rate in St. Clair County: 5.9% † 3,489 (±0.9% / ±535)
  • about 1.5 times the rate in Illinois: 5% 150,099 (±0.1% / ±3,035)

Housing

10,858 ±359 Number of housing units
  • St. Clair County: 115,348 ±93
  • Illinois: 5,443,501 ±767

$265,700 ±$8,816 Median value of owner-occupied housing units
  • about 1.5 times the amount in St. Clair County: $168,800 ±$4,855
  • a little higher than the amount in Illinois: $250,500 ±$863

12.8% ±2.5% (3,304  ±642.3) Moved since previous year
  • about 10 percent higher than the rate in St. Clair County: 11.8% 29,759 (±1% / ±2,430.1)
  • about 10 percent higher than the rate in Illinois: 11.5% 1,442,284 (±0.1% / ±14,975.1)

Social

96.5% ±4.2% (17,124  ±946.9) High school grad or higher
  • a little higher than the rate in St. Clair County: 92.7% 162,056 (±1.9% / ±3,338.3)
  • about 10 percent higher than the rate in Illinois: 90.3% 7,887,284 (±0.3% / ±22,684.6)
47.6% ±3.1% (8,445  ±620) Bachelor's degree or higher
  • about 1.5 times the rate in St. Clair County: 30.7% 53,719 (±1.1% / ±1,834.1)
  • about 1.3 times the rate in Illinois: 37.2% 3,249,494 (±0.2% / ±13,788.4)

N/A Persons with language other than English spoken at home

3.8% ±1.3% (1,005  ±350) Foreign-born population
  • about 20 percent higher than the rate in St. Clair County: 3.2% 8,156
  • about one-quarter of the rate in Illinois: 14.5% 1,833,810

20.6% ±2.1% (3,909  ±410) Population with veteran status
  • more than 1.5 times the rate in St. Clair County: 11.8% 22,616 (±0.6% / ±1,055)
  • more than double the rate in Illinois: 5% 493,667 (±0.1% / ±4,919)
3,909 Total veterans ±410 3,336 Male ±372 573 Female ±157

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