60004
Cook County, IL · 2025
4,939 homes in this zip may be paying too much in property taxes — a collective ~$598.4M above the neighborhood median.
The typical flagged property is overassessed by ~$68,502. Overassessments range from ~$9,550 to ~$199,720,000. 342 properties have recent purchase price evidence — the strongest argument at a Board of Review hearing. Ownwell can file your appeal and handle everything — no upfront cost, you only pay if you save.
Appeal windows vary by township, March–November 2026. Find your township's open window at cookcountyassessor.com.
Flagged
4,939
properties
Median
$68,502
overassessment
Max
$199,720,000
overassessment
Sale evidence
342
properties
Flagged Properties
Sorted by Overassessment · 4,939 Total