Lake Saint Louis, St. Charles County, Missouri Property Taxes
Property Taxes in Lake Saint Louis, Missouri
Median Lake Saint Louis, Missouri effective property tax rate: 1.30%, significantly higher than the national median of 1.02%, and higher than the Missouri state median of 1.25%.
Median Lake Saint Louis, Missouri home value: $363,749
Median annual Lake Saint Louis, Missouri tax bill: $4,718, $2,318 higher than the national median property tax bill of $2,400.
How are property taxes in St. Charles calculated?
Property taxes in Lake Saint Louis, 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.
Why does this matter for homeowners in Lake Saint Louis? Because a higher assessed value can increase your tax bill, and understanding local exemptions can help reduce what you owe. With a median effective property tax rate of 1.30%, Lake Saint Louis homeowners face a heavier burden than both the national median and the Missouri state median.
Knowing how the county assesses property and where reductions may apply can lead to meaningful savings.
Last Updated April 13, 2026
Lake Saint Louis, St. Charles County, Missouri Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.3%
Estimate Property Tax Bill
$4,729
$4,388
How Does the Lake Saint Louis Property Tax Calculator Work?
Use this Lake Saint Louis property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Lake Saint Louis's median effective tax rate of 1.30% — 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 Lake Saint Louis'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 Lake Saint Louis: rates range from 1.30% in 63367 to 1.30% in 63367, primarily due to differences in school district levies and local assessment districts. Lake Saint Louis’s median effective tax rate is higher than the 1.25% Missouri median and above the 1.02% national median, and the median tax bill of $4,718 is $2,318 higher than the state median.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Lake Saint Louis.
About Lake Saint Louis Property Taxes
About Property Taxes in Lake Saint Louis, St. Charles, Missouri
Lake Saint Louis's median effective property tax rate of 1.30% is higher 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 Lake Saint Louis. Homeowners in ZIP code 63367 carry a median effective rate of 1.30%, while those in 63367 pay 1.30%. This spread — 0.00 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 Lake Saint Louis you live in can make a meaningful difference to your annual tax bill.
Lake Saint Louis 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 Lake Saint Louis, 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 Lake Saint Louis'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 Lake Saint Louis, 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 Lake Saint Louis Tax Rate
1.30%
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 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 Lake Saint Louis, St. Charles County, Missouri
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 63367 | 1.25% | 1.29% | 1.30% | 1.31% | 1.31% |
Source: Ownwell
Property Tax Assessment Values Across Lake Saint Louis, St. Charles County, Missouri
When examining property taxes in Lake Saint Louis, 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 assessor 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 Lake Saint Louis.
For example, the median home price in Lake Saint Louis is $363,749, with tax bills ranging significantly across the county. 63367 has the highest median home price at $363,749.
Property Tax Assessment Values Across Lake Saint Louis, St. Charles County, Missouri
Source: Ownwell
$10,000
$389,855
$769,710
Median Lake Saint Louis Market Value
$363,749
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 Lake Saint Louis, St. Charles County, Missouri
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 63367 | $212,207 | $275,661 | $363,749 | $459,927 | $591,764 |
Source: Ownwell
Property Tax Bills Across Lake Saint Louis, St. Charles County, Missouri
How are property tax bills calculated in Lake Saint Louis?
Property tax bills in Lake Saint Louis are based on the assessed value of a home, which is then multiplied by the local tax rate. That assessed value is tied to the market value of the property, so changes in home prices can affect what homeowners owe. For a home with a median price of $363,749, the tax bill can vary widely depending on the assessment and local levies.
What factors affect the final bill?
Local government budgets, school district taxes, and other taxing authorities all play a role in the amount due. In St. Charles County, the median property tax bill is $4,718 in ZIP code 63367, which is above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.
How does this affect homeowners?
Higher assessed values can lead to larger bills, making property taxes a significant ongoing cost for homeowners in Lake Saint Louis.
Property Tax Bills Across Lake Saint Louis, St. Charles County, Missouri
Source: Ownwell
$116
$5,072
$10,027
Median Lake Saint Louis Tax Bill
$4,718
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 Lake Saint Louis, St. Charles County, Missouri
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 63367 | $2,850 | $3,601 | $4,718 | $5,944 | $7,710 |
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 |