Seaton, Mercer County, Illinois Property Taxes
Property Taxes in Seaton, Illinois
Median Seaton, Illinois effective property tax rate: 3.09%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Seaton, Illinois home value: $207,068
Median annual Seaton, Illinois tax bill: $6,641, $4,241 higher than the national median property tax bill of $2,400.
How are property taxes in Mercer calculated?
Property taxes in Seaton, 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 Seaton's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Seaton, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Seaton, Mercer County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.09%
Estimate Property Tax Bill
$6,398
$5,938
How Does the Seaton Property Tax Calculator Work?
Use this Seaton property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Seaton's median effective tax rate of 3.09% — based on actual property records in Mercer County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Seaton'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 Seaton: rates range from 3.09% in 61476 to 3.09% in 61476, 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 Seaton.
About Seaton Property Taxes
About Property Taxes in Seaton, Mercer, Illinois
Seaton's median effective property tax rate of 3.09% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Mercer County base levy combined with local school district levies and Special service areas (SSAs) that vary by subdivision throughout the city.
Property tax rates are not uniform across Seaton. Homeowners in the 61476 ZIP code carry a median effective rate of 3.09%, while those in the lowest ZIP code pay 3.09%. This spread — 0 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Mercer County. Understanding which part of Seaton you live in can make a meaningful difference to your annual tax bill.
Seaton homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the November 7, 2025 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 Seaton, Mercer 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 Seaton'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 Seaton Tax Rate
3.09%
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 Mercer County Tax Rate
2.81%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Seaton, Mercer County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61476 | 2.76% | 2.91% | 3.09% | 3.16% | 3.29% |
Source: Ownwell
Property Tax Assessment Values Across Seaton, Mercer County, Illinois
When examining property taxes in Seaton, 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 Mercer 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 Mercer 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 Seaton.
For example, the median home price in Seaton is $207,068, with tax bills ranging significantly across the county. Zip code 61476 has the highest median home price at $207,068.
Property Tax Assessment Values Across Seaton, Mercer County, Illinois
Source: Ownwell
$103,635
$155,352
$207,068
Median Seaton Market Value
$207,068
Median Mercer County Market Value
$150,030
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Seaton, Mercer County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61476 | $23,729 | $107,587 | $207,068 | $329,194 | $478,470 |
Source: Ownwell
Property Tax Bills Across Seaton, Mercer County, Illinois
How are property tax bills calculated in Seaton?
Property tax bills in Seaton are based on the assessed value of a home and the local tax rate set by taxing authorities. The assessed value is tied to the market value of the property, and that figure is used to determine how much tax a homeowner owes. Factors such as the home’s location, size, condition, and any local levies can affect the final bill.
For a home with a median value of $207,068, the property tax bill can vary widely. The 25th percentile tax bill is $3,405, while the 75th percentile reaches $9,564. At the 90th percentile, bills climb to $14,241. The median tax bill in the area is $6,641, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.
For homeowners, this means property taxes can be a major ongoing cost that affects monthly budgets and long-term housing affordability.
Median Seaton Tax Bill
$6,641
Median Mercer County Tax Bill
$4,254
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Seaton, Mercer County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61476 | $1,276 | $3,405 | $6,641 | $9,564 | $14,241 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | November 7 |
Links | |
|---|---|
| Mercer Tax Assessor | |
| Website | merceril.devnetwedge.com |