Dennison, Clark County, Illinois Property Taxes
Property Taxes in Dennison, Illinois
Median Dennison, Illinois effective property tax rate: 1.86%, significantly higher than the national median of 1.02%, and lower than the Illinois state median of 2.33%.
Median Dennison, Illinois home value: $99,872
Median annual Dennison, Illinois tax bill: $1,660, $740 lower than the national median property tax bill of $2,400.
How are property taxes in Clark calculated?
Property taxes in Dennison, 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 Dennison's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Dennison, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Dennison, Clark County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.86%
Estimate Property Tax Bill
$1,858
$1,724
How Does the Dennison Property Tax Calculator Work?
Use this Dennison property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Dennison's median effective tax rate of 1.86% — based on actual property records in Clark County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Dennison'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 Dennison: rates range from 1.86% in 62423 to 1.86% in 62423, 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 Dennison.
About Dennison Property Taxes
About Property Taxes in Dennison, Clark, Illinois
Dennison’s median effective property tax rate of 1.86% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Clark 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 Dennison. Homeowners in the 62423 ZIP code carry a median effective rate of 1.86%, while those in the lowest ZIP also pay 1.86%. This spread reflects how school district boundaries and local assessment districts are drawn across Clark County. Understanding which part of Dennison you live in can make a meaningful difference to your annual tax bill.
Dennison homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before January 1, 1970 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 Dennison, Clark 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 Dennison'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 Ă· 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 Dennison Tax Rate
1.86%
Our median effective property tax rate (tax bill Ă· 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 Clark County Tax Rate
1.95%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Dennison, Clark County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62423 | 1.05% | 1.61% | 1.86% | 1.98% | 2.08% |
Source: Ownwell
Property Tax Assessment Values Across Dennison, Clark County, Illinois
When examining property taxes in Dennison, 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 Clark 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 Clark 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 example, the median home price in Dennison is $99,872, with a median tax bill of $1,660. The highest median home price is in 62423 at $99,872.
Property Tax Assessment Values Across Dennison, Clark County, Illinois
Source: Ownwell
$56,658
$93,477
$130,296
Median Dennison Market Value
$99,872
Median Clark County Market Value
$89,572
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Dennison, Clark County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62423 | $21,969 | $59,080 | $99,872 | $179,666 | $250,462 |
Source: Ownwell
Property Tax Bills Across Dennison, Clark County, Illinois
Property tax bills in Dennison are based on the assessed value of a home, not its market value, and the local tax rate applied by Clark County and other taxing authorities. For homeowners, the bill is determined by multiplying the assessed value by the applicable tax rate, then adjusting for exemptions or other local factors.
With a median home price of $99,872, property taxes can still vary widely from one homeowner to another. In Dennison, the 25th percentile tax bill is $870, while the 75th percentile is $3,149 and the 90th percentile reaches $4,653. The median tax bill is $1,660, which is below the national median property tax bill of $2,400 and below the national median property tax rate of 1.02%.
These differences matter because a higher assessed value or fewer exemptions can increase the amount owed, while lower assessments may reduce it. For homeowners, that means property taxes can have a meaningful impact on annual housing costs.
Median Dennison Tax Bill
$1,660
Median Clark County Tax Bill
$1,620
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Dennison, Clark County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62423 | $345 | $870 | $1,660 | $3,149 | $4,653 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | January 1 |
Links | |
|---|---|
| Clark Tax Assessor | |
| Website | clarkil.devnetwedge.com |