Onarga, Iroquois County, Illinois Property Taxes
Property Taxes in Onarga, Illinois
Median Onarga, Illinois effective property tax rate: 2.63%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Onarga, Illinois home value: $121,329
Median annual Onarga, Illinois tax bill: $3,522, $1,122 higher than the national median property tax bill of $2,400.
How are property taxes in Iroquois calculated?
Property taxes in Onarga, 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 Onarga's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Onarga, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Onarga, Iroquois County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.63%
Estimate Property Tax Bill
$3,191
$2,961
How Does the Onarga Property Tax Calculator Work?
Use this Onarga property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Onarga's median effective tax rate of 2.63% — based on actual property records in Iroquois County — to generate your estimate.
Enter your property's estimated assessed value — the figure used to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Onarga'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 Onarga: rates range from 2.63% in 60955 to 2.63% in 60955, 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 Onarga.
About Onarga Property Taxes
About Property Taxes in Onarga, Iroquois, Illinois
Onarga’s median effective property tax rate of 2.63% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Iroquois 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 Onarga. Homeowners in the 60955 ZIP code carry a median effective rate of 2.63%, while those in the same ZIP code also pay 2.63%. This reflects how school district boundaries and local assessment districts are drawn across Iroquois County. Understanding where you live in Onarga can still help explain your annual tax bill.
Onarga homeowners who believe their assessed value is too high can file a formal appeal with the 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 Onarga, Iroquois 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 Onarga'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 Onarga Tax Rate
2.63%
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 Iroquois County Tax Rate
2.86%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Onarga, Iroquois County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60955 | 1.85% | 2.20% | 2.63% | 3.07% | 3.52% |
Source: Ownwell
Property Tax Assessment Values Across Onarga, Iroquois County, Illinois
When examining property taxes in Onarga, 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 Iroquois 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 Iroquois County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the season.
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 Onarga is $121,329, with a median tax bill of $3,522. The 25th percentile tax bill is $2,159, while the 75th percentile is $5,765 and the 90th percentile reaches $8,077.
Property Tax Assessment Values Across Onarga, Iroquois County, Illinois
Source: Ownwell
$83,658
$117,924
$152,190
Median Onarga Market Value
$121,329
Median Iroquois County Market Value
$113,187
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Onarga, Iroquois County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60955 | $2,835 | $74,752 | $121,329 | $182,570 | $232,818 |
Source: Ownwell
Property Tax Bills Across Onarga, Iroquois County, Illinois
Property tax bills in Onarga are calculated by applying the local tax rate to a home’s assessed value, not its market price. Local taxing authorities set budgets, and those needs are spread across all taxable properties in the area. For homeowners, that means the final bill depends on both the assessed value of the home and the tax rate in Iroquois County.
With a median home price of $121,329, property taxes can still vary widely from one household to another. The median tax bill in the area is $3,522, which is above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Bills at the 25th percentile are $2,159, while the 75th percentile reaches $5,765, showing how much assessments and local rates can affect what homeowners owe.
For many homeowners, higher assessed values can mean higher annual tax bills, making it important to understand how the assessment is determined and how it influences the amount due each year.
Median Onarga Tax Bill
$3,522
Median Iroquois County Tax Bill
$3,480
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Onarga, Iroquois County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60955 | $1,161 | $2,159 | $3,522 | $5,765 | $8,077 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Iroquois Tax Assessor | |
| Website | iroquoisil.devnetwedge.com |