NC
Clayton, NC
Population, housing, work, and travel data for this Census place.
- Population
- 32,633
- Median home
- $329,600
Illinois / Census place 1755249
O'Fallon
A Census profile of the people, homes, and daily patterns that shape this place.
Official Census name: O'Fallon cityAt a glance
A city in numbers.
- Population
- 32,656 2025 estimate
- Annual change
- +1.5% Population estimate
- Density
- 2,066/sq mi 15.8 sq mi land area
- Median age
- 37.8 years ACS 5-year estimate
Living here
The everyday equation.
Households, homes, education, and the time it takes to get around.
- Median household income
- $105,982
- Median home value
- $295,700
- Median gross rent
- $1,332
- Bachelor’s degree or higher
- 52.4%
- Typical commute
- 25.3 min
- Public transit commute
- 0.5%
Climate normals
The long view of weather.
Thirty-year averages, not a forecast. Temperature and precipitation describe the typical conditions recorded from 1991 through 2020.
Representative station: BELLEVILLE SIU RSCH (6 mi from place center)- Average high
- 68.9°F
- Average low
- 46.4°F
- Annual rainfall
- 43.4"
- Annual snowfall
- 11.2"
Month by month
A year in O'Fallon.
JFMAMJJASOND
Data vintage
Population is from the 2025 Population Estimates Program. Household, housing, education, and commute data are from the 2020-2024 American Community Survey 5-year release.
Population estimatesACS profileTIGERweb boundaryNOAA climate normals
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Population, housing, work, and travel data for this Census place.
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Population, housing, work, and travel data for this Census place.
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Keep exploring
Compare O'Fallon with Clayton →