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O'Fallon

A township of 26,785 people in St. Clair County, Illinois
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Map of O'Fallon: conserved land, trails and the top places to walk
Conserved land4.3%982 of 22,772 acres
Trails6.3 mi0.2 mi per sq mi
Parks & preserves837 conserved acres per 1,000 residents

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

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About O'Fallon

City in Illinois, United States
1854Established
32,289Population
15.4 sq miArea
538 ftElevation

O'Fallon is a city in St. Clair County, Illinois, United States. The 2020 census listed the population at 32,289. The city is the second largest city in the Metro East region and Southern Illinois. It sits 5 miles (8.0 km) from Scott Air Force Base and 18 miles (29 km) from Downtown St. Louis. Like its namesake in St. Charles County, Missouri, O'Fallon is part of the St. Louis metro area. This makes O'Fallon (along with the two Troys in Illinois and Missouri) one of the few pairs of like-named municipalities to be part of the same metro region.

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From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code62269
Area code618
Living in O'Fallon

Housing in O'Fallon

$316K▲ 2.5% in a year Typical home value · Zillow

The typical O'Fallon home is worth about $316,000, up 2.5% in a year, 6% above the Illinois typical home.

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Schools in O'Fallon

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A−

School Grade A-

The public schools O'Fallon’s kids attend, from kindergarten through graduation, outperform 75% of Illinois’s districts on state tests and graduation. Among towns with similar incomes, they rank near the top.

#74Best public schoolsof 384 in IL
DistrictO Fallon CCSD 90Schools9

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within IL. Ratings are from neighbors.

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O'Fallon

Illinois · IL · St. Clair County
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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01