Active Listings
372
⇧ 20.8% vs 308 last year
Data as of September 2026. Source: Realtor.com.
The O'fallon, MO real estate market currently shows 372 active listings, with 151 pending sales. Homes are averaging 40.4 days on the market before going under contract.
Inventory has increased compared to last year, with 64 more homes available — giving buyers more choice.
Homes are selling faster, averaging 40.4 days on market compared to 45.9 days last year.
The median listing price has fallen 2.9% year-over-year, from $450,684 to $437,776.
Population: 98,870 · Density: 669.1/mi² · Median household income: $103,255
Typical home value: $278,959 · Homeownership: 81.6%