Contact Our Office

Main Office - County Building

118 North Clark Street
Room #320
Chicago, IL 60602

Contact: 312-443-7550
Hours 8:30 a.m. - 5:00 p.m.

Our Other Office Locations

Business Data Subscriptions

The Assessor’s Office has recently received authorization from the Cook County Board of Commissioners to provide businesses with unlimited direct access to the most current assessment data in Cook County. If you wish to receive more information about this service, please fill out the form below. Database Subscription Agreement

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Due to the high volume of emails during this tax bill period, it is possible that it may take a couple of days for your email to be answered. We appreciate your patience.

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