62269   Zip Code O'Fallon St. Clair IL United States

City O'Fallon
County St. Clair
State Illinois
Latitude 38.59844
Longitude -89.91294
Population 35,923
Density 1204.4 people per square mile
Time Zone America/Chicago
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $103,818
Median individual: $56,172

Race

Mode: 70.5% White

Gender

 50.2% female 

Rent

  $1321 / month  

Median house value: $288,995.0

Age

Median: 38.0 years old

Education

With at least college degree: 52.0%
With STEM degree: 42.0%

Marital Status

 59.2% married 

Never married: 26.7%

Labor Force Participation

 65.7% working 

Unemployed: 3.4%

Average Family Size

 3.03 people 

Commute Time

 25.1 minutes 

Health Care

 4.1% uninsured 

Poverty

 5.5%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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