PropertyTaxPeek

Cook County, IL vs Mercer County, NJ

Property Tax Rate Comparison 2025

Quick Answer

Cook County, IL: 2.29% effective rate · $3,716/yr median tax · median home $162,297

Mercer County, NJ: 1.93% effective rate · $4,244/yr median tax · median home $219,907

Side-by-Side Comparison

MetricCook County, ILMercer County, NJNational Avg
Effective Tax Rate2.29%1.93%1.06%
Median Annual Tax$3,716$4,244$2,778
Median Home Value$162,297$219,907$268,728
Population5,275,541387,340

Cook County, IL

Effective Rate
2.29%
Median Annual Tax
$3,716
Median Home Value
$162,297
Population
5,275,541
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Mercer County, NJ

Effective Rate
1.93%
Median Annual Tax
$4,244
Median Home Value
$219,907
Population
387,340
Full profile →

Frequently Asked Questions

What is the property tax difference between Cook County and Mercer County?
Cook County, IL has an effective property tax rate of 2.29% with a median annual tax of $3,716. Mercer County, NJ has a rate of 1.93% with a median annual tax of $4,244. The difference is 0.36 percentage points.
Which county has higher property taxes, Cook County or Mercer County?
Cook County, IL has the higher effective property tax rate at 2.29% compared to 1.93%.
How do Cook County and Mercer County compare to the national average?
The national average effective property tax rate is 1.06%. Cook County is above average at 2.29%, and Mercer County is above average at 1.93%.