What is the property tax rate in O'Fallon, MO?

O'Fallon has an estimated effective property tax rate of 1.15%. On a median home valued at $305,100, homeowners pay approximately $3,501 per year in property taxes.

How does O'Fallon compare to St. Charles County?

O'Fallon's effective rate of 1.15% is 6% higher than the St. Charles County average of 1.08%. The county-wide median annual tax is $3,480, while O'Fallon homeowners pay an estimated $3,501.

How much are property taxes in O'Fallon on a $300,000 home?

Based on O'Fallon's effective rate of 1.15%, property taxes on a $300,000 home would be approximately $3,450 per year, or about $288 per month.

O'Fallon Property Tax Rate

St. Charles County, Missouri

1.15%effective rate

O'Fallon is located in St. Charles County, Missouri. Homeowners in O'Fallon pay a median of $3,501 per year in property taxes on a home valued at $305,100, resulting in an effective tax rate of 1.15%. This is 6% higher than the St. Charles County average of 1.08%.

Effective Tax Rate🏠

1.15%

vs 1.08% county avg

Est. Annual Tax💰

$3,501

Per year

Median Home Value📊

$305,100

2024 estimate

Population📍

92,697

O'Fallon, MO

How O'Fallon Compares

O'Fallon

1.15%

St. Charles County Average

1.08%

Missouri Average

0.85%

National Average

0.92%

Cities in St. Charles County

Compare property tax rates for 4 cities in St. Charles County, Missouri.

City	Population	Annual Tax	Rate
St. Peters	58,200	$3,000	1.19%
Wentzville	45,734	$3,585	1.18%
O'Fallon	92,697	$3,501	1.15%
St. Charles	71,048	$2,989	1.06%

About Property Taxes in O'Fallon

Property taxes in O'Fallon are collected by St. Charles County. Tax exemptions available to St. Charles County residents — including homestead, senior, and disability exemptions — also apply to homeowners in O'Fallon. For detailed information on available exemptions and the county tax collector, see the St. Charles County property tax page.

Property Tax Calculator

Estimate your annual property tax in O'Fallon

Home Value

$50k$2M

Apply homestead exemption ($100,000 school tax reduction)

Estimated Annual Property Tax

$3,450

$288/month · Rate: 1.15%

St. Charles County Property Taxes

County-level data, exemptions, historical trends, and tax collector info.

View county details →

Missouri Property Taxes

Statewide rates, all 115 counties, and exemptions.

View state details →

Think your property tax is too high?

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Frequently Asked Questions

Data Source: U.S. Census Bureau, 2024 American Community Survey 5-Year Estimates. City-level tax data is derived from Census place-level statistics. Effective tax rates are calculated by dividing median real estate taxes paid by median home value. Actual property tax rates may vary based on local taxing jurisdictions, exemptions, and assessment practices. This information is for general reference only and should not be used as a substitute for professional tax advice.