Ofallon, St. Charles County, Missouri Property Taxes

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Property Taxes in Ofallon, Missouri

Median O'Fallon, Missouri effective property tax rate: 1.24%, significantly lower than the national median of 1.02%, and slightly higher than the Missouri state median of 1.25%.
Median O'Fallon, Missouri home value: $57,486
Median annual O'Fallon, Missouri tax bill: $715, lower than the national median property tax bill of $2,400.

How are property taxes in St. Charles calculated?

Property taxes in O'Fallon, Missouri are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding O'Fallon's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in O'Fallon, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Ofallon, St. Charles County, Missouri Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.24%

Estimate Property Tax Bill

$713

$661

How Does the O'Fallon Property Tax Calculator Work?

Use this O'Fallon property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies O'Fallon's median effective tax rate of 1.24% — based on actual property records in St. Charles County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessor uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies O'Fallon's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within O'Fallon: rates range from $715 in 63366 to $5,216 in 63368, primarily due to differences in school district levies and local assessment districts.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across O'Fallon.

About Ofallon Property Taxes

About Property Taxes in OFALLON, St. Charles, Missouri

OFALLON's median effective property tax rate of 1.24% is lower than the Missouri state median of 1.25% and higher than the national median of 1.02%. This rate reflects the St. Charles County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.

Property tax rates are not uniform across OFALLON. Homeowners in the 63368 ZIP code carry a median effective rate of 1.30%, while those in 63366 pay 1.24%. This spread — 0.06 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across St. Charles County. Understanding which part of OFALLON you live in can make a meaningful difference to your annual tax bill.

OFALLON homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the July 13, 2026 deadline each year.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Ofallon, St. Charles County, Missouri

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare O'Fallon's effective property tax rate to other cities in Missouri and the median property tax rates in Missouri and the U.S.

Property Tax Rates Across Ofallon, St. Charles County, Missouri

Source: Ownwell

1.09%

1.21%

1.33%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Ofallon Tax Rate

1.24%

Median Effective St. Charles County Tax Rate

1.26%

Median Effective Missouri Tax Rate

1.25%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Ofallon, St. Charles County, Missouri

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
63366	1.19%	1.24%	1.24%	1.24%	1.24%
63368	1.20%	1.29%	1.30%	1.30%	1.31%

Source: Ownwell

Property Tax Assessment Values Across Ofallon, St. Charles County, Missouri

When examining property taxes in Ofallon, Missouri, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The St. Charles County appraisal district estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In St. Charles County, assessment notices are sent in April each year. They'll typically reach your mailbox by the middle of April.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Ofallon.

For example, the median home price in Ofallon is $57,486, with tax bills ranging significantly across the county. 63368 has the highest median home price at $401,322.

Property Tax Assessment Values Across Ofallon, St. Charles County, Missouri

Source: Ownwell

$10,000

$389,855

$769,710

Median Ofallon Market Value

$57,486

Median St. Charles County Market Value

$292,700

Median Missouri Market Value

$136,526

Median United States Market Value

$235,294

Property Tax Assessment Values Across Ofallon, St. Charles County, Missouri

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
63366	$43,458	$57,486	$57,486	$57,486	$634,141
63368	$241,877	$282,465	$401,322	$449,148	$3,333,412

Source: Ownwell

Property Tax Bills Across Ofallon, St. Charles County, Missouri

Property tax bills in O'Fallon are based on the assessed value of a home, not its market price alone. Local taxing authorities apply tax rates to that assessed value, and the final bill can vary depending on where the property is located within St. Charles County and which local services support the area. For homeowners, that means two similar homes can receive very different tax bills if their assessments or tax districts differ.

The data shows a wide range of property tax bills in the city, with the 25th percentile at $715 and the 75th percentile at $4,685. The 90th percentile reaches $9,364, while the lowest median tax bill is $715 in ZIP code 63366 and the highest median tax bill is $5,216 in ZIP code 63368. With a median home price of $57,486, property taxes can still represent a meaningful cost for homeowners, especially when assessments rise faster than expected.

Property Tax Bills Across Ofallon, St. Charles County, Missouri

Source: Ownwell

$116

$5,072

$10,027

Median Ofallon Tax Bill

$715

Median St. Charles County Tax Bill

$3,678

Median Missouri Tax Bill

$1,684

Median United States Tax Bill

$2,400

Property Tax Bills Across Ofallon, St. Charles County, Missouri

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
63366	$540	$715	$715	$715	$8,395
63368	$2,927	$3,683	$5,216	$5,832	$37,533

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	July 13

Links
St. Charles Tax Assessor
Website	mo-stcharles-assessor.publicaccessnow.com

Frequently Asked Property Tax Questions in Ofallon, Missouri

How are property taxes calculated in Ofallon, Missouri?

Property taxes in Ofallon, Missouri are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Ofallon, Missouri?

To appeal your property taxes in Ofallon, Missouri, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Ofallon, Missouri?

Common property tax exemptions in Ofallon, Missouri include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Ofallon, Missouri?

Property tax deadlines in Ofallon, Missouri vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Ofallon, Missouri?

Ownwell provides professional property tax appeal services in Ofallon, Missouri. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.