Cook County, IL · 2025

2 homes in this zip may be paying too much in property taxes — a collective ~$0.8M above the neighborhood median.

The typical flagged property is overassessed by ~$389,446. Overassessments range from ~$136,155 to ~$642,738. 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.