Knoxville, Knox County, Illinois Property Taxes
Property Taxes in Knoxville, Illinois
Median Knoxville, Illinois effective property tax rate: 2.60%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Knoxville, Illinois home value: $135,720
Median annual Knoxville, Illinois tax bill: $2,984, $584 higher than the national median property tax bill of $2,400.
How are property taxes in Knox calculated?
Property taxes in Knoxville, 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 Knoxville's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Knoxville, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Knoxville, Knox County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.6%
Estimate Property Tax Bill
$3,529
$3,275
How Does the Knoxville Property Tax Calculator Work?
Use this Knoxville property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Knoxville's median effective tax rate of 2.60% — based on actual property records in Knox 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 Knoxville's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Knoxville's property tax rate is higher than Illinois's 2.33% median and the national median property tax rate of 1.02%, with a median property tax bill of $2,984. The median bill is $584 higher than the state median property tax bill.
Your bill may vary by ZIP code within Knoxville: rates range from 2.60% in 61448 to 2.60% in 61448, 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 Knoxville.
About Knoxville Property Taxes
About Property Taxes in Knoxville, Knox, Illinois
Knoxville’s median effective property tax rate of 2.60% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Knox County base levy combined with local school district levies and special service areas that can vary by subdivision throughout the city.
Property tax rates are not uniform across Knoxville. Homeowners in the 61448 ZIP code carry a median effective rate of 2.60%, while those in the same ZIP code also pay 2.60%. This means the spread is 0.00 percentage points across the city, showing how local assessment districts are drawn across Knox County. Understanding where you live can still help you better estimate your annual tax bill.
Knoxville homeowners who believe their assessed value is too high can file a formal appeal with the Knox County Tax Assessor before June 1, 2026.
If your estimated bill 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 Knoxville, Knox 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 Knoxville'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 Knoxville Tax Rate
2.60%
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 Knox County Tax Rate
2.82%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Knoxville, Knox County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61448 | 1.72% | 2.27% | 2.60% | 2.69% | 2.78% |
Source: Ownwell
Property Tax Assessment Values Across Knoxville, Knox County, Illinois
When examining property taxes in Knoxville, 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 Knox 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 Knox 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. 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 Knoxville.
For example, the median home price in Knoxville is $135,720, with tax bills ranging significantly across the county. 61448 has the highest median home price at $135,720.
Property Tax Assessment Values Across Knoxville, Knox County, Illinois
Source: Ownwell
$40,530
$174,788
$309,045
Median Knoxville Market Value
$135,720
Median Knox County Market Value
$93,540
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Knoxville, Knox County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61448 | $39,876 | $77,400 | $135,720 | $189,360 | $291,498 |
Source: Ownwell
Property Tax Bills Across Knoxville, Knox County, Illinois
Property tax bills in Knoxville are based on the assessed value of a home, not its market price alone. Local taxing authorities use that assessed value to calculate what a homeowner owes, applying the tax rate set for the area. Factors such as the home’s characteristics, location, and any changes in value can affect the final bill.
With a median home price of $135,720, Knoxville homeowners can see a wide range in tax bills depending on how their property is assessed. The 25th percentile tax bill is $1,832, while the 75th percentile is $4,643 and the 90th percentile reaches $7,316. The median tax bill in the area is $2,984, which is above the national median property tax bill of $2,400 and reflects how local assessments can shape costs.
For homeowners, this means property taxes can be a major part of annual housing expenses. A higher assessed value generally leads to a higher bill, making it important to understand how the calculation works.
Median Knoxville Tax Bill
$2,984
Median Knox County Tax Bill
$2,355
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Knoxville, Knox County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61448 | $831 | $1,832 | $2,984 | $4,643 | $7,316 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Knox Tax Assessor | |
| Website | knoxil.devnetwedge.com |