Thornton, Cook County, Illinois Property Taxes
Median Thornton, IL effective property tax rate: 3.79%, significantly higher than the national median of 1.02%, but lower than the Illinois state median of 2.35%.
Median Thornton, IL home value: $88,120
Median annual Thornton, IL tax bill: $3,325, $925 higher than the national median property tax bill of $2,400.
How are property taxes in Cook calculated?
Property taxes in Thornton, IL 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 Thornton’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Thornton, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Thornton, Cook County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.79%
Estimate Property Tax Bill
$3,340
$3,099
$1,102
Average Tax Savings
Ownwell’s Thornton Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in Thornton with just two data points.
By entering your property's estimated assessed value, our calculator applies Thornton’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations.
This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in Cook County.
For those interested in more localized information, please scroll down to explore city-level trends!
Property Tax Rates Across Thornton, Cook County, Illinois
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 Thornton’s effective property tax rate to other cities in Illinois and the median property tax rates in Illinois and the U.S. Thornton, located in Cook County, experiences a notably high property tax rate. With a median tax rate of 3.79%, Thornton's property taxes are significantly above the national median rate of 1.02%. This places Thornton among the regions with the highest property tax rates in Illinois. Such a high rate reflects the county's efforts to meet its budgetary requirements for providing local services. Understanding these rates can help homeowners in Thornton make informed decisions about property ownership and tax appeals.
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 Thornton Tax Rate
3.79%
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 Cook County Tax Rate
2.01%
Median Effective Illinois Tax Rate
2.35%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Thornton, Cook County, Illinois
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
60476 | 1.27% | 2.40% | 3.79% | 4.53% | 6.10% |
Source: Ownwell
$1,102
Average Thornton Tax Savings
Save on your property taxes & more with Ownwell
Property Tax Assessment Values Across Thornton, Cook County, Illinois
When examining property taxes in Thornton, 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 Cook County Assessor's 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.
In Cook County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of April. 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 Thornton.
For example, the median home price in Thornton is $88,120, with tax bills ranging significantly across the county. Zip code 60476 has the highest median home price at $88,120.
Property Tax Assessment Values Across Thornton, Cook County, Illinois
Source: Ownwell

$25,480
$637,740
$1,250,000
Median Thornton Market Value
$88,120
Median Cook County Market Value
$210,000
Median Illinois Market Value
$194,700
Median United States Market Value
$235,294
Property Tax Assessment Values Across Thornton, Cook County, Illinois
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
60476 | $76,880 | $84,220 | $88,120 | $97,120 | $110,748 |
Source: Ownwell
$1,102
Average Thornton Tax Savings
Save on your property taxes & more with Ownwell
Property Tax Bills Across Thornton, Cook County, Illinois
In Thornton, located in Cook County, IL, property tax bills are determined by the assessed value of a home, which is a percentage of its market value. The local tax rate is applied to this assessed value to calculate the annual tax bill. Homeowners in Thornton face a median property tax bill of $3,325, which is higher than the national median of $2,400. This can place a significant financial burden on homeowners, especially when compared to the national median property tax rate of 1.02%. Factors such as property improvements, neighborhood changes, and local government budgets can affect the assessed value and, consequently, the tax bill.
Ownwell offers a solution by providing property tax appeal and exemption services to help homeowners reduce their tax burden. By analyzing individual property assessments and market conditions, Ownwell identifies potential inaccuracies and files appeals on behalf of homeowners. This service can lead to significant savings, allowing homeowners in Thornton to manage their expenses more effectively.
Median Thornton Tax Bill
$3,325
Median Cook County Tax Bill
$4,680
Median Illinois Tax Bill
$4,715
Median United States Tax Bill
$2,400
Property Tax Bills Across Thornton, Cook County, Illinois
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
60476 | $1,050 | $2,085 | $3,325 | $4,566 | $5,663 |
Source: Ownwell
$1,102
Average Thornton Tax Savings
Save on your property taxes & more with Ownwell
Don't miss the deadline to appeal!
Dates | |
---|---|
Tax Bill | |
Issued | February 1 |
Due Date #1 | March 1 |
Due Date #2 | August 1 |
Links | |
---|---|
Cook Assessor’s Office | |
Phone | (312) 443-7550 |
Website | assessorpropertydetails.cookcountyil.gov |
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