As of Monday, November 16th, the downtown and suburban offices of the Cook County Assessor's Office are closed to the public.
Our phone lines remain open to the public during normal business hours and assistance is available via our website and social media channels.
The basics of the property tax system and what you need to know.
How To File...
These guides can assist you in filing for exemptions or appeals with our office.
Deadlines, property information requests, and valuation reports can be found here.
Where do I find my PIN?
Your 14-digit Property Index Number (PIN) is printed on your tax bill, your property closing documents and deed, and notices from the Assessor's office (such as your assessment notice).
Enter PIN to see property details
Don’t know the property’s PIN? Search by address.