DeKalb County Property Taxes
DeKalb County, Illinois
Effective Tax Rate
0.00%
111.7% above state avgMedian Annual Tax
$0
$491/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
2.54%
At a Glance
Median Home Value
$231,900
State avg ▲ $146,132
Tax w/ Mortgage/yr
$6,108
$509/mo escrow
Tax w/o Mortgage/yr
$5,430
$453/mo
State Tax Rate Rank
#101
of 102 counties (1 = lowest)
Data Story
About Property Taxes in DeKalb County, Illinois
DeKalb's taxes rank among state's highest
DeKalb County's effective tax rate of 2.539% significantly exceeds both the national median rate and the Illinois state average of 1.831%. With a median property tax of $5,889—more than double the national median of $2,690—DeKalb residents face the highest tax burden among Illinois' major counties due to stronger property valuations and a robust tax base.
Top tier for Illinois property taxes
DeKalb County ranks among Illinois' highest tax counties with its 2.539% effective rate, driven by median home values of $231,900 that exceed the state average. The median tax bill of $5,889 reflects a county where robust residential and commercial development has created substantial municipal service demands.
DeKalb's taxes far outpace region's norms
At 2.539%, DeKalb County's rate towers over surrounding counties like DuPage (2.094%), Douglas (1.813%), and De Witt (1.849%). The county's median home value of $231,900—higher than nearly all regional peers—drives both higher absolute taxes and a steeper effective rate, making it significantly less affordable than surrounding areas.
Budget $5,889 annually in property taxes
DeKalb County homeowners pay approximately $5,889 per year on a median home valued at $231,900—roughly $491 monthly. Mortgage payers see slightly higher bills at $6,108 annually, while owners without mortgages pay $5,430, suggesting relatively consistent assessment patterns across the county despite its high overall burden.
High taxes make appeals worthwhile
With tax bills exceeding $5,800 annually, DeKalb County residents have significant financial incentive to challenge inflated assessments through formal appeals. Even modest reductions—10-15%—could save hundreds of dollars yearly, making a professional assessment review a smart investment for property owners.
How DeKalb County Compares
Median Annual Property Tax
DeKalb County
2.54%
Effective rate
Illinois Avg
1.90%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in DeKalb County, Illinois?
How much are property taxes in DeKalb County?
How does DeKalb County compare to the Illinois average?
What is the median home value in DeKalb County, Illinois?
Why is DeKalb County property tax rate higher than the Illinois average?
How does DeKalb County rank for property taxes in Illinois?
Counties with Similar Tax Rates
Nearby Counties
Other Counties in Illinois
Data updated: March 2026
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.