St. Charles County, MO Property Taxes (2026)

St. Charles County owners pay a median of $3,340 a year on a median home value of $296,800, an effective rate of 1.13%. That's the 4th-highest rate of 115 Missouri counties with Census data, above the Missouri county median of 0.74%.

Updated October 2026 · Data: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023)

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Effective tax rate

1.13%

4th highest of 115 in MO

Median annual bill

$3,340

~$278/month

Median home value

$296,800

Missouri county median

0.74%

Effective rate

What a protest could save you in St. Charles County

Enter the market value from your appraisal notice. We apply St. Charles County's 1.13% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$3,354
Savings at 10–15% off
$335–$503
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St. Charles County vs. Missouri vs. U.S. property tax rates

St. Charles County1.13%
Missouri county median0.74%
U.S. county median0.84%

Key stat: St. Charles County's effective property tax rate is 1.13%, vs. 0.74% for the median Missouri county and 0.84% for the median U.S. county. It ranks 4th of 115 in Missouri. Effective rate = median tax bill ÷ median home value, so it already reflects typical exemptions. (Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023))

How to appeal your property taxes in St. Charles County

  1. 1

    Review your assessment notice

    Check the assessed value from the St. Charles County Assessor. Compare it to recent sales of similar homes nearby.

  2. 2

    File your appeal before the deadline

    The St. Charles County deadline is Varies by county. Missing it means waiting until the next assessment year.

  3. 3

    Gather evidence

    Recent comparable sales, photos of condition issues, repair estimates or an independent appraisal.

  4. 4

    Present your case

    Submit evidence or attend a hearing with the County Assessor.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $3,340 bill, 10–15% off is $334–$501 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

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Property tax exemptions in Missouri

Missouri homeowners may qualify for exemptions that reduce taxable value. Check with the St. Charles County Assessor for amounts.

Homestead exemption

For your primary residence. Reduces the value used to calculate your bill.

Senior / over-65

Many states add an exemption or freeze for owners 65 and older.

Disability

For homeowners with qualifying disabilities, often similar to the over-65 benefit.

Veterans

Disabled veterans may get partial or full exemptions depending on rating.

Frequently Asked Questions

What is the property tax rate in St. Charles County, Missouri?
The median effective property tax rate in St. Charles County is 1.13%: a median annual bill of $3,340 on a median home value of $296,800. That's the 4th-highest rate of 115 Missouri counties with Census data. Your own rate depends on which city, school district and special districts you're in. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023).
How much are property taxes in St. Charles County?
The median St. Charles County property tax bill is $3,340 a year, about $278 a month, compared with a Missouri county median of $1,101.
What is the deadline to appeal property taxes in St. Charles County?
The deadline to appeal in St. Charles County is Varies by county. Missing it means waiting until the next assessment cycle.
Is St. Charles County a high property tax area?
St. Charles County's 1.13% effective rate is above the Missouri county median of 0.74% and above the U.S. county median of 0.84%. That's the 4th-highest rate of 115 Missouri counties with Census data.
Can TaxDrop help lower my St. Charles County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

St. Louis County

Rate: 1.22%

Median bill: $3,193

Lincoln County

Rate: 0.77%

Median bill: $1,731

St. Louis city

Rate: 1.05%

Median bill: $1,935

Warren County

Rate: 0.74%

Median bill: $1,780

Franklin County

Rate: 0.83%

Median bill: $1,774

Jefferson County

Rate: 0.84%

Median bill: $1,835

Montgomery County

Rate: 0.75%

Median bill: $1,282

Pike County

Rate: 0.77%

Median bill: $994

← All 115 Missouri counties

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