The Assessor's Office is responsible for setting fair and accurate values for 1.8 million parcels of Cook County property. The value of these properties is not determined on an individual basis, but rather by …

In areas outside the City of Chicago, assistance may be available at local township assessors' offices. Our office will be closed on the following designated holidays.

A study was published by the University of Chicago that found our Office has made great progress in improving the fairness of residential assessments. We encourage you to read the study and learn …

Search for refunds and learn more about the Treasurer's "Black & Latino Houses Matter" program by calling the Treasurer's Office at (312) 603-5100 or visiting cookcountytreasurer.com. Please note: the …

The mission of the township assessor is to provide information and services which are accessible, prompt, and accurate. Homeowners can visit their local township assessor for assistance.

This is a free tool created by Cook County GIS. It allows you to see exactly which properties are considered comparable to yours in Cook County's property database.

Once the exemption is applied, the Assessor’s Office automatically renews it each year. A Homeowner Exemption provides property tax savings by reducing the equalized assessed value.

*Only list the name of your street. Do not include designations like place, street, lane or their abbreviations.

The Cook County Assessor is an elected government official who is responsible for establishing fair and accurate property assessments. Valuation of the county's 1.8 million parcels of property is conducted …

Illinois law provides the Certificate of Error procedure to allow the Cook County Assessor to apply changes to a property tax bill that has already been issued.