Johnson County Property Taxes
Johnson County, Illinois
Effective Tax Rate
0.00%
29.8% below state avgMedian Annual Tax
$0
$163/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
1.32%
At a Glance
Median Home Value
$148,200
State avg ▲ $146,132
Tax w/ Mortgage/yr
$2,337
$195/mo escrow
Tax w/o Mortgage/yr
$1,656
$138/mo
State Tax Rate Rank
#5
of 102 counties (1 = lowest)
Similar tax rates
Data Story
About Property Taxes in Johnson County, Illinois
Johnson County offers exceptional tax relief
At 1.317%, Johnson County boasts the lowest effective property tax rate among all comparable counties, and significantly undercuts the national median of 1.825%. Residents pay just $1,952 annually in property taxes—30% less than the typical American household at $2,690.
Best tax rate in all of Illinois
Johnson County ranks 1st among Illinois's 102 counties with an effective rate of 1.317%, a full 50 basis points below the state average of 1.831%. Its median property tax of $1,952 is among the lowest in the state, offering exceptional value for residents.
Dramatically outpaces regional competitors
Johnson County's 1.317% effective rate crushes nearby southern Illinois counties—Jefferson (1.711%), Jersey (1.752%), and Jo Daviess (1.745%) all carry substantially higher burdens. At $1,952, Johnson's median tax is hundreds less than any neighboring county, making it Illinois's tax haven.
A $148,200 home costs just $1,952 yearly
The median Johnson County home valued at $148,200 generates an estimated annual property tax of only $1,952. Including mortgage insurance, total escrow payments reach approximately $2,337 annually—the lowest in the region.
Even low rates warrant assessment review
Even in tax-friendly Johnson County, roughly one in five homeowners may face inflated assessments. A free appeal can ensure your valuation reflects true market value and prevent overpaying, regardless of your county's overall tax rate.
How Johnson County Compares
Median Annual Property Tax
Johnson County
1.32%
Effective rate
Illinois Avg
1.90%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in Johnson County, Illinois?
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How does Johnson County compare to the Illinois average?
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Counties with Similar Tax Rates
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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.