MissionThe mission of the Cook County Assessor’s Office is to deliver accurate and transparent assessments of all residential and commercial properties. We serve every community in the County …

Click here to access our advanced search tool, where you can locate your property by address, PIN, or neighborhood.

For appointments or assistance, please book at a nearby branch. In areas outside the City of Chicago, assistance may be available at local township assessors' offices. Our office will be closed on the …

The Cook County Assessor's Office, situated in Chicago, Illinois, is responsible for delivering accurate and transparent assessments of all residential and commercial properties within Cook County.

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Important: This site provides access to the Cook County Assessor’s Office property records database. To access the records, you can search by your Property Index Number (PIN) or by Address.