Herrin, Williamson County, Illinois Property Taxes
Property Taxes in Herrin, Illinois
Median Herrin, Illinois effective property tax rate: 2.57%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Herrin, Illinois home value: $79,350
Median annual Herrin, Illinois tax bill: $1,829, $571 lower than the national median property tax bill of $2,400.
How are property taxes in Williamson calculated?
Property taxes in Herrin, 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 Herrin's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Herrin, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Herrin, Williamson County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.57%
Estimate Property Tax Bill
$2,039
$1,892
How Does the Herrin Property Tax Calculator Work?
Use this Herrin property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Herrin's median effective tax rate of 2.57% — based on actual property records in Williamson 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 Herrin'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 Herrin: rates are 2.57% in 62948, 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 Herrin.
About Herrin Property Taxes
About Property Taxes in Herrin, Williamson, Illinois
Herrin’s median effective property tax rate of 2.57% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Williamson 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 Herrin. Homeowners in the 62948 ZIP code carry a median effective rate of 2.57%, while those in the same ZIP also pay 2.57%. This reflects how school district boundaries and local assessment districts are drawn across Williamson County. Understanding which part of Herrin you live in can make a meaningful difference to your annual tax bill.
Herrin homeowners who believe their assessed value is too high can file a formal appeal with the local 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 Herrin, Williamson 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 Herrin'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 Herrin Tax Rate
2.57%
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 Williamson County Tax Rate
2.31%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Herrin, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62948 | 1.38% | 2.07% | 2.57% | 2.90% | 2.90% |
Source: Ownwell
Property Tax Assessment Values Across Herrin, Williamson County, Illinois
When examining property taxes in Herrin, 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 Williamson 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 Williamson 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 Herrin is $79,350, with tax bills ranging significantly across the county. 62948 has the highest median home price at $79,350.
Property Tax Assessment Values Across Herrin, Williamson County, Illinois
Source: Ownwell
$28,710
$84,180
$139,650
Median Herrin Market Value
$79,350
Median Williamson County Market Value
$92,430
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Herrin, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62948 | $28,950 | $50,910 | $79,350 | $137,220 | $203,916 |
Source: Ownwell
Property Tax Bills Across Herrin, Williamson County, Illinois
Property tax bills in Herrin are based on the assessed value of a home and the local tax rate set by taxing authorities in Williamson County. When a property’s market value changes, the assessed value can change too, which affects the final bill. For a home with a median value of $79,350, the tax bill reflects how local governments fund services such as schools, roads, and public safety.
Homeowners in Herrin typically see a median property tax bill of $1,829, which is below the national median property tax bill of $2,400 and below the national median property tax rate of 1.02%. Bills can vary widely, though, with the 25th percentile at $1,056 and the 75th percentile at $3,329. At the high end, the 90th percentile reaches $5,292.
Because the bill depends on both value and rate, even similar homes can be taxed differently. That means homeowners may face a higher or lower bill depending on where they live and how their property is assessed.
Median Herrin Tax Bill
$1,829
Median Williamson County Tax Bill
$1,966
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Herrin, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62948 | $476 | $1,056 | $1,829 | $3,329 | $5,292 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Williamson Tax Assessor | |
| Website | williamsonil.devnetwedge.com |