Is Saint Charles, MO 63303 a buyer’s or seller’s market?

The Saint Charles housing market right now

In the three months ending August 31, 2026, 48% of homes in Saint Charles, MO 63303 sold above their list price, the typical home went under contract in 10 days and there were 1.2 months of supply. Under four months of supply means sellers have the edge: expect competition for well-priced homes. That’s based on 188 home sales.

Compared with the same period a year earlier, the share selling over asking was about the same (46% then), homes sold more slowly (6 days then) and the median sale price rose 7% to $364,842. Overall, Saint Charles is about as competitive as it was a year ago.

Within St. Charles County, homes here sell faster than in 64% of the county’s ZIP codes, and sell more often over asking than in 91%. On our competition score, Saint Charles ranks #17 of 263 MO ZIP codes with enough sales (score 90 out of 100).

Nearby, buyers who want less competition could look at Portage Des Sioux 63373 (0% sold over asking) or Foristell 63348 (17% sold over asking), while O Fallon 63366 (54% sold over asking) is even more competitive.