Mercer County Property Taxes
Mercer County, Illinois
Effective Tax Rate
0.00%
2.6% below state avgMedian Annual Tax
$0
$226/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
1.95%
At a Glance
Median Home Value
$139,300
State avg ▼ $146,132
Tax w/ Mortgage/yr
$2,995
$250/mo escrow
Tax w/o Mortgage/yr
$2,310
$193/mo
State Tax Rate Rank
#63
of 102 counties (1 = lowest)
Similar tax rates
Data Story
About Property Taxes in Mercer County, Illinois
Mercer County taxes exceed the national average
Mercer County's effective tax rate of 1.945% tops the national median of 1.831%, placing it above the 50th percentile nationwide. On a home valued at $281,900, this rate would generate roughly $5,473 in annual taxes—significantly higher than the national median of $2,690.
Mercer ranks in the upper half statewide
At 1.945%, Mercer County's effective rate exceeds Illinois's state average of 1.831%. Despite median home values of just $139,300, Mercer's median tax bill of $2,710 still tracks above the state median of $2,782 relative to its modest home prices.
Mercer's rate tops nearby Menard and Montgomery counties
Mercer's 1.945% effective rate significantly outpaces Menard County's 1.637% and Montgomery County's 1.720%. A homeowner with a $150,000 property in Mercer pays roughly $300 more annually than an identical home in Menard.
Typical Mercer home costs $2,710 per year in taxes
The median $139,300 home in Mercer County carries a $2,710 annual property tax. With mortgage-related charges, the total climbs to $2,995, making property taxes a meaningful expense for homeowners.
Appeal your assessment if values seem inflated
Mercer County residents paying above-market rates should request a professional assessment review. Many overassessed homeowners successfully lower their tax burden through formal appeals to the county assessor's office.
How Mercer County Compares
Median Annual Property Tax
Mercer County
1.95%
Effective rate
Illinois Avg
1.90%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in Mercer County, Illinois?
How much are property taxes in Mercer County?
How does Mercer County compare to the Illinois average?
What is the median home value in Mercer County, Illinois?
Why is Mercer County property tax rate higher than the Illinois average?
How does Mercer 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.