This Afternoon
75°F
Areas Of Drizzle53% precip
Tonight
68°F
Widespread Drizzle then Chance Showers And Thunderstorms61% precip
Sunday
80°F
Patchy Drizzle then Mostly Cloudy17% precip
Sunday Night
66°F
Partly Cloudy11% precip
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O'Fallon by the numbers
Population
29,606Population figure, 2020
Households & income
- Area
- 15.76 sq mi (40.81 km²), 0.11 sq mi water
- Median age
- 37.8
- Households
- 12,816
- Persons per household
- 2.5
- Median household income
- $105,982
- Median house value
- $295,700
Municipal office
- Office
- CITY ADMINISTRATOR
- Address
- 255 S LINCOLN AVE, O FALLON, IL 62269