Cook County, IL vs Rock Island County, IL
Property Tax Rate Comparison 2025
Quick Answer
Cook County, IL: 2.29% effective rate · $3,716/yr median tax · median home $162,297
Rock Island County, IL: 1.66% effective rate · $4,811/yr median tax · median home $289,874
Side-by-Side Comparison
| Metric | Cook County, IL | Rock Island County, IL | National Avg |
|---|---|---|---|
| Effective Tax Rate | 2.29% | 1.66% | 1.06% |
| Median Annual Tax | $3,716 | $4,811 | $2,778 |
| Median Home Value | $162,297 | $289,874 | $268,728 |
| Population | 5,275,541 | 147,546 | — |
Cook County, IL
- Effective Rate
- 2.29%
- Median Annual Tax
- $3,716
- Median Home Value
- $162,297
- Population
- 5,275,541
Rock Island County, IL
- Effective Rate
- 1.66%
- Median Annual Tax
- $4,811
- Median Home Value
- $289,874
- Population
- 147,546
Frequently Asked Questions
What is the property tax difference between Cook County and Rock Island County?
Cook County, IL has an effective property tax rate of 2.29% with a median annual tax of $3,716. Rock Island County, IL has a rate of 1.66% with a median annual tax of $4,811. The difference is 0.63 percentage points.
Which county has higher property taxes, Cook County or Rock Island County?
Cook County, IL has the higher effective property tax rate at 2.29% compared to 1.66%.
How do Cook County and Rock Island 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 Rock Island County is above average at 1.66%.