O'Fallon, MO housing market
The typical O'Fallon home is worth about $380,000, up 1.7% in a year, 42% above the Missouri typical home. Homes typically sell in 8 days, a little above asking.
Home values, sales, trends and how O'Fallon compares with the towns next door — updated as new data is published.
O'Fallon at a glance
A strong seller's market
Homes are selling faster than new ones are listed: less than two months of supply. Well-priced homes can draw several offers.
Typical home value, 2016–2026
Show as a table
| January | O'Fallon | Missouri |
|---|---|---|
| 2017 | $229,000 | $148,000 |
| 2018 | $239,000 | $156,000 |
| 2019 | $250,000 | $165,000 |
| 2020 | $262,000 | $173,000 |
| 2021 | $285,000 | $193,000 |
| 2022 | $323,000 | $219,000 |
| 2023 | $346,000 | $237,000 |
| 2024 | $360,000 | $247,000 |
| 2025 | $373,000 | $258,000 |
| 2026 | $376,000 | $263,000 |
| August 2026 | $380,000 | $268,000 |
O'Fallon and its neighbors
| Town | Typical value | 1-yr change | Days on market | Median income |
|---|---|---|---|---|
| O'Fallon | $380K | +1.7% | 8 | $110,443 |
| Dardenne Prairie | $472K | +1.1% | 43 | $152,500 |
| Lake St. Louis | $433K | +0.7% | 13 | $125,693 |
| St. Paul | $473K | −5.6% | — | $159,022 |
| St. Peters | $324K | +3.8% | 25 | $91,637 |
| Cottleville | $504K | +3.5% | 31 | $131,310 |
| Weldon Spring | $640K | +3.4% | 16 | $158,548 |
3.4 years of income
The typical O'Fallon home costs about 3.4 years of the town's median household income, less than across Missouri (3.8 years).
How O'Fallon ranks on affordability →
Home value ÷ ACS median household income.
Owners, rent & taxes
U.S. Census Bureau, ACS 2020-2024.
Home values: Zillow Home Value Index (ZHVI), Zillow Research, August 2026. Sales, days on market and supply: Redfin Data Center, May 2026. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. Listings link to their publishers.