St. Louis County, MO Property Tax Rate
Homeowners in St. Louis County pay an effective 1.22% of home value in property tax — about $3,181 a year on the median $260,700 home, above the Missouri county median of 0.74%.
St. Louis County, MO: 1.22% effective property tax — ~$3,181/yr on the median home.
- Effective rate1.22%
- Median home value$260,700
- Median annual bill$3,181
- MO county median0.74%
- U.S. county median0.84%
Source: U.S. Census ACS 2023 5-year (median taxes paid ÷ median value), compiled June 2026.
St. Louis County vs. Missouri and the U.S.
| Effective rate | On the county's $260,700 median home | |
|---|---|---|
| St. Louis County | 1.22% | $3,181 |
| Missouri county median | 0.74% | $1,929 |
| U.S. county median | 0.84% | $2,190 |
Median household income here is $81,340, putting the median tax bill at about 3.9% of income. Effective rates fold in homestead exemptions and assessment practice — they're what owners actually pay, which is why they beat statutory rates for comparison.
Highest & lowest rates in Missouri
| County | Effective rate | Median bill |
|---|---|---|
| St. Louis County | 1.22% | $3,181 |
| Atchison County | 1.17% | $1,177 |
| Jackson County | 1.15% | $2,453 |
| St. Charles County | 1.13% | $3,354 |
| Wright County | 0.38% | $579 |
| Douglas County | 0.41% | $674 |
| Shannon County | 0.43% | $649 |
| Carter County | 0.44% | $649 |
Full picture: Missouri property tax calculator · interactive county atlas · all county pages.
Frequently asked questions
What is the property tax rate in St. Louis County, MO?
The effective rate is about 1.22% of home value — the median homeowner pays roughly $3,181 a year on a $260,700 median home (ACS 2023 five-year data).
Is St. Louis County's property tax high?
It's above the Missouri county median (0.74%) and above the U.S. county median (0.84%).
How is the effective rate calculated?
Median real-estate taxes paid ÷ median home value, from the Census American Community Survey — what owners actually pay, after exemptions, rather than the statutory millage.
Sources & methodology
Sources: Census ACS 2023 5-year tables B25103/B25077.
Effective rate = median real-estate taxes ÷ median home value (owner-occupied). Individual bills vary with exemptions, assessment timing and local levies — verify with the county assessor.