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O'Fallon, IL

32,139 Population
15.8 square miles 2,035.3 people per square mile

Census data: ACS 2023 5-year unless noted

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Demographics

36.9 ±1.4 Median age
  • about 90 percent of the figure in the St. Louis, MO-IL Metro Area: 39.8 ±0.2
  • a little less than the figure in Illinois: 38.9 ±0.1

Economics

$51,826 ±$3,065 Per capita income
  • about 20 percent higher than the amount in the St. Louis, MO-IL Metro Area: $44,689 ±$304
  • about 20 percent higher than the amount in Illinois: $45,104 ±$196
$102,793 ±$5,980 Median household income
  • about 1.3 times the amount in the St. Louis, MO-IL Metro Area: $78,225 ±$675
  • about 25 percent higher than the amount in Illinois: $81,702 ±$363

4.4% ±1.5% (1,401  ±486) Persons below poverty line
  • about two-fifths of the rate in the St. Louis, MO-IL Metro Area: 10.3% 283,828 (±0.3% / ±7,339)
  • about two-fifths of the rate in Illinois: 11.7% 1,454,217 (±0.2% / ±18,530)

26.2 minutes ±2.6 (329,445  ±38,021) Mean travel time to work
  • a little higher than the figure in the St. Louis, MO-IL Metro Area: 25.1 30,087,170 (±0.2 / ±245,452)
  • about 90 percent of the figure in Illinois: 28.1 148,440,910 (±0.1 / ±701,124)

Families

12,461 ±399 Number of households
  • the St. Louis, MO-IL Metro Area: 1,154,841 ±3,246
  • Illinois: 5,001,904 ±7,673
2.6 ±0.1 (32,139  ±38) Persons per household
  • about 10 percent higher than the figure in the St. Louis, MO-IL Metro Area: 2.4 2,753,676 (±0 / ±541)
  • a little higher than the figure in Illinois: 2.5 12,414,044

9.7% ±3.7% (692  ±265) Women 15-50 who gave birth during past year
  • nearly double the rate in the St. Louis, MO-IL Metro Area: 5% 32,578 (±0.2% / ±1,463)
  • nearly double the rate in Illinois: 5% 150,099 (±0.1% / ±3,035)

Housing

13,152 ±427 Number of housing units
  • the St. Louis, MO-IL Metro Area: 1,267,353 ±337
  • Illinois: 5,443,501 ±767

$274,100 ±$10,520 Median value of owner-occupied housing units
  • about 20 percent higher than the amount in the St. Louis, MO-IL Metro Area: $232,100 ±$1,247
  • about 10 percent higher than the amount in Illinois: $250,500 ±$863

12.1% ±2.3% (3,836  ±735.6) Moved since previous year
  • a little higher than the rate in the St. Louis, MO-IL Metro Area: 11.7% 326,459 (±0.3% / ±7,652.9)
  • a little higher than the rate in Illinois: 11.5% 1,442,284 (±0.1% / ±14,975.1)

Social

97% ±4.7% (20,566  ±1,127.5) High school grad or higher
  • a little higher than the rate in the St. Louis, MO-IL Metro Area: 93.3% 1,828,862 (±0.5% / ±10,486.7)
  • about 10 percent higher than the rate in Illinois: 90.3% 7,887,284 (±0.3% / ±22,684.6)
51.3% ±3.3% (10,872  ±757.2) Bachelor's degree or higher
  • about 1.4 times the rate in the St. Louis, MO-IL Metro Area: 37.6% 736,151 (±0.3% / ±6,591.4)
  • about 1.4 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

4.2% ±1.2% (1,334  ±385) Foreign-born population
  • about 80 percent of the rate in the St. Louis, MO-IL Metro Area: 5% 141,431
  • about one-quarter of the rate in Illinois: 14.5% 1,833,810

19.5% ±1.8% (4,303  ±419) Population with veteran status
  • more than double the rate in the St. Louis, MO-IL Metro Area: 7.3% 159,471 (±0.1% / ±2,434)
  • more than double the rate in Illinois: 5% 493,667 (±0.1% / ±4,919)
4,303 Total veterans ±419 3,633 Male ±382 670 Female ±161

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