Louisville, Clay County, Illinois Property Taxes
Property Taxes in Louisville, Illinois
Median Louisville, Illinois effective property tax rate: 1.72%, significantly lower than the national median of 1.02%, and lower than the Illinois state median of 2.33%.
Median Louisville, Illinois home value: $53,838
Median annual Louisville, Illinois tax bill: $818, $1,582 lower than the national median property tax bill of $2,400.
How are property taxes in Clay calculated?
Property taxes in Louisville, Illinois 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 Louisville's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Louisville, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Louisville, Clay County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.72%
Estimate Property Tax Bill
$926
$859
How Does the Louisville Property Tax Calculator Work?
Use this Louisville property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Louisville's median effective tax rate of 1.72% — based on actual property records in Clay County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Louisville'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 Louisville: rates range from 1.72% in 62858 to 1.72% in 62858, 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 Louisville.
About Louisville Property Taxes
About Property Taxes in Louisville, Clay, Illinois
Louisville’s median effective property tax rate of 1.72% is lower than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Clay County base levy combined with local school district levies and special service areas that vary by subdivision throughout the city.
Property tax rates are not uniform across Louisville. Homeowners in the 62858 ZIP code carry a median effective rate of 1.72%, while those in the same ZIP also pay 1.72%. This reflects how school district boundaries and local assessment districts are drawn across Clay County. Understanding your location in Louisville can make a meaningful difference to your annual tax bill.
Louisville homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the June 1, 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 Louisville, Clay County, Illinois
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 Louisville's effective property tax rate to other cities in Illinois and the median property tax rates in Illinois and the U.S.
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 Louisville Tax Rate
1.72%
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 Clay County Tax Rate
1.75%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Louisville, Clay County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62858 | 0.57% | 1.22% | 1.72% | 2.08% | 2.78% |
Source: Ownwell
Property Tax Assessment Values Across Louisville, Clay County, Illinois
When examining property taxes in Louisville, Illinois, 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 Clay County assessment office 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 Clay County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.
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. For context, Louisville’s median home price is $53,838, while the median tax bill is $818, well below the national median property tax bill of $2,400. Tax bills range from $282 at the 25th percentile to $3,631 at the 90th percentile.
Property Tax Assessment Values Across Louisville, Clay County, Illinois
Source: Ownwell
$39,561
$53,808
$68,055
Median Louisville Market Value
$53,838
Median Clay County Market Value
$51,015
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Louisville, Clay County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62858 | $12,848 | $24,381 | $53,838 | $105,195 | $180,839 |
Source: Ownwell
Property Tax Bills Across Louisville, Clay County, Illinois
How are property tax bills calculated in Louisville, Clay County, Illinois?
Property tax bills in Louisville are based on the assessed value of a home, not its market value alone. Local taxing authorities apply the property tax rate to that assessed value, and the result becomes the annual bill. Because the bill is tied to assessment, changes in a home’s value can affect what a homeowner owes from year to year.
What factors are considered when the bill is set?
The main factors are the home’s assessed value and the local tax rate. In Louisville, the median home price is $53,838, which helps show how property taxes can still vary widely by property and location. The typical tax bill ranges from $282 at the 25th percentile to $2,151 at the 75th percentile, with the highest median tax bill at $818 in ZIP code 62858.
How does this affect homeowners?
A higher assessment can mean a higher bill, even if the home is not sold. For homeowners, understanding the assessment process is important because it directly affects annual property tax costs.
Median Louisville Tax Bill
$818
Median Clay County Tax Bill
$804
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Louisville, Clay County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62858 | $118 | $282 | $818 | $2,151 | $3,631 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Clay Tax Assessor | |
| Website | clayil.devnetwedge.com |