Homeowners in O'Fallon, Missouri paid a median $3,609 a year in property tax on a median home worth $326,200, an effective rate of about 1.11% (Census 2020–2024).
1.08%St. Charles County overall
O'Fallon vs county, state and US
Effective rate
Median tax paid per year
Tax on a home in O'Fallon
At the local 1.11% effective rate
| Home value | Estimated yearly tax | Per month |
|---|---|---|
| $150,000 | $1,660 | $138 |
| $250,000 | $2,766 | $230 |
| $350,000 | $3,872 | $323 |
| $500,000 | $5,532 | $461 |
Buying a home in St. Charles County? 2026 loan limits
Nearby and related
- St. Charles County property taxcounty overview
- Missouri property tax by countyranked
- St. Charles, MO1.05% effective
- St. Peters, MO1.19% effective
- Wentzville, MO1.14% effective
- Lake St. Louis, MO1.10% effective
- Dardenne Prairie, MO1.06% effective
- Cost of living in Missouriprices & rents
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25103 (median real estate taxes paid), B25077 (median home value), B25003, B25088, B19013 and B01003. These are 2020–2024 medians reported by owner-occupants, not 2026 tax bills or official mill rates. The effective rate here is median tax ÷ median home value. Actual bills depend on assessed value, exemptions (homestead, senior, veteran) and local levies. Check with your county assessor or treasurer. Not tax advice.
Frequently asked questions
What is the property tax rate in O'Fallon, Missouri?
Homeowners in O'Fallon, Missouri paid a median $3,609 a year in property tax on a median home worth $326,200, an effective rate of about 1.11% (Census 2020–2024).
How much is property tax on a $250,000 home in O'Fallon?
About $2,766 a year at the 1.11% median effective rate. Exemptions such as homestead can lower it.
Is property tax in O'Fallon higher than the rest of Missouri?
O'Fallon ranks #382 lowest of 485 Missouri places we track. The statewide effective rate is 0.85%. St. Charles County overall is 1.08%.