Cortland, Dekalb County, Illinois Property Taxes
Property Taxes in Cortland, Illinois
Median Cortland, Illinois effective property tax rate: 2.67%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Cortland, Illinois home value: $229,209
Median annual Cortland, Illinois tax bill: $5,998, $3,598 higher than the national median property tax bill of $2,400.
How are property taxes in DeKalb calculated?
Property taxes in Cortland, 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 Cortland's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Cortland, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Cortland, Dekalb County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.67%
Estimate Property Tax Bill
$6,120
$5,679
How Does the Cortland Property Tax Calculator Work?
Use this Cortland property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Cortland's median effective tax rate of 2.67% — based on actual property records in DeKalb 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 Cortland'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 Cortland: rates are 2.67% in 60112, 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 Cortland.
About Cortland Property Taxes
About Property Taxes in Cortland, DeKalb, Illinois
Cortland’s median effective property tax rate of 2.67% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the DeKalb 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 Cortland. Homeowners in the 60112 ZIP code carry a median effective rate of 2.67%, while those in the same ZIP code pay 2.67%. This spread reflects how school district boundaries and local assessment districts are drawn across DeKalb County. Understanding which part of Cortland you live in can make a meaningful difference to your annual tax bill.
Cortland homeowners who believe their assessed value is too high can file a formal appeal with the 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 Cortland, Dekalb 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 Cortland'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 Cortland Tax Rate
2.67%
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 Dekalb County Tax Rate
2.44%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Cortland, Dekalb County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60112 | 2.11% | 2.45% | 2.67% | 2.92% | 3.29% |
Source: Ownwell
Property Tax Assessment Values Across Cortland, Dekalb County, Illinois
When examining property taxes in Cortland, 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 DeKalb 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 DeKalb County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
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 Cortland.
For example, the median home price in Cortland is $229,209, with tax bills ranging significantly across the county. 60112 has the highest median home price at $229,209.
Property Tax Assessment Values Across Cortland, Dekalb County, Illinois
Source: Ownwell
$160,695
$253,926
$347,157
Median Cortland Market Value
$229,209
Median Dekalb County Market Value
$222,627
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Cortland, Dekalb County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60112 | $158,277 | $191,974 | $229,209 | $267,117 | $299,061 |
Source: Ownwell
Property Tax Bills Across Cortland, Dekalb County, Illinois
Property tax bills in Cortland are based on the assessed value of a home, not its market price alone. Local taxing authorities apply tax rates to that assessed value to determine the annual bill, and the amount can change when assessments or local budgets change.
Several factors affect what homeowners pay, including the home’s assessed value, the tax rate set by local governments, and any exemptions that may reduce the bill. With a median home price of $229,209, property taxes can still be substantial, especially when compared with the national median property tax bill of $2,400.
In Cortland, the property tax burden is higher than the national norm, with bills ranging from $4,675 at the 25th percentile to $7,423 at the 75th percentile, and reaching $8,964 at the 90th percentile. That means property taxes can have a major impact on monthly housing costs and long-term affordability for homeowners.
Median Cortland Tax Bill
$5,998
Median Dekalb County Tax Bill
$5,381
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Cortland, Dekalb County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 60112 | $3,621 | $4,675 | $5,998 | $7,423 | $8,964 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| DeKalb Tax Assessor | |
| Website | dekalbil.devnetwedge.com |