O'Fallon, Illinois
Small Illinois city with local appeal
Midwest
WhereAtHome Score
Score pending
Overview
O'Fallon is an Illinois city with a population of approximately 31,968,. Median household income is $102,560.
Key Highlights
- Population of approximately 31,968 (2023 Census estimate)
- Median household income of $102,560 (Census ACS)
- Average commute time of 26 minutes
Key Metrics
2024 Presidential Election
St. Clair County (county-level results)
53%
45%
Democrat 63,433
Republican 54,021
Leans D+7.9
Source: County-level results from MIT Election Data + Science Lab. Learn more
Location
O'Fallon, IL
(38.5923, -89.9112)
View on Google Maps
Compare with another city
Start ComparisonLast Updated: 2026-01-01
Data sourced from U.S. Census Bureau, Zillow, FBI Crime Data Explorer, Walk Score, and Niche.
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