Cook County, IL · 2025

25 homes in this zip may be paying too much in property taxes — a collective ~$3.8M above the neighborhood median.

The typical flagged property is overassessed by ~$84,209. Overassessments range from ~$43,000 to ~$1,166,031. 3 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.