Is O Fallon, IL 62269 a buyer’s or seller’s market?

The O Fallon housing market right now

In the three months ending August 31, 2026, 32% of homes in O Fallon, IL 62269 sold above their list price, the typical home went under contract in 33 days and there were 2.5 months of supply. Under four months of supply means sellers have the edge: expect competition for well-priced homes. That’s based on 166 home sales.

Compared with the same period a year earlier, the share selling over asking fell from 49%, homes sold more slowly (31 days then) and the median sale price rose 1% to $384,501. Overall, O Fallon is less competitive than a year ago, which gives buyers more room.

Within St. Clair County, homes here sell faster than in 63% of the county’s ZIP codes, and sell more often over asking than in 54%. On our competition score, O Fallon ranks #223 of 464 IL ZIP codes with enough sales (score 67 out of 100).

Nearby, buyers who want less competition could look at Summerfield 62289 (0% sold over asking) or Saint Libory 62282 (0% sold over asking), while East Carondelet 62240 (75% sold over asking) and Freeburg 62243 (57% sold over asking) are even more competitive.