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

E-Mail Subscription

Subscribe to receive updates from our office.

To our Valued E-Mail Subscribers,

The office of Cook County Assessor Joseph Berrios is working with a new email service provider to ensure all assessment notifications are delivered in a more timely and efficient manner. We are also working to ensure that all emails are being sent to valid, working addresses.

Due to the high volume of email notifications sent by our office, there may be a slight delay while our new provider verifies the email addresses we currently have on file. We are therefore asking you to regularly visit the following link to the Assessor’s Office web site: This will help ensure you do not miss any of the Assessor’s important assessment notifications and appeal deadline dates. This page contains the most current information and is continually updated prior to all emails being sent to taxpayers.

You will soon receive an email from our office asking you to verify your email address. By clicking the link included in the email, you will verify that your email address is both current and valid. If you do not respond, your email address will be classified as inactive and you will no longer receive assessment deadlines/notifications from our office.

We appreciate your cooperation and patience as we in the Cook County Assessor’s Office continue to work to improve our email notification process.

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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