Cook County is offering more tools, data, and transparency to help property owners understand and verify their property assessments. From open data releases to detailed methodology worksheets, ...

While property taxes became a focus across the country in 2025, the biggest story by far was the disaster in Cook County. Starting with computer issues, things cascaded into multiple massive errors ...

Cook County property tax bills will be late again this year, the treasurer’s office bluntly affirmed this week, as various offices continue to try to catch up from last year’s troubles and address ...

In Illinois, depending on the county where the owner's property is located, they may have multiple opportunities to appeal their property tax assessment. For owners in Cook County, the first is the ...

Cook County will mail 1.8 million second installment property tax bills for Tax Year 2024 on November 14, with payment due by December 15. The county also offers tools like the Housing Market Tracker ...

The frustration Cook County homeowners feel about rising property taxes came out loud and clear in Tuesday’s race for county assessor — losing incumbent Fritz Kaegi performed the poorest in areas of ...