UPDATE: Property tax exemption applications will be available early February.

Contact Us

Although the downtown and suburban offices of the Cook County Assessor's Office are currently closed to in-person visits, you can:

call us at (312) 443-7550 between 9am and 4:30pm
find assistance on our website and social media channels.

📌 Looking for exemption applications? They will be available in the first week of February, but many exemptions will auto-renew and you may not need to take any action to receive property tax savings. Read more here.

Please note we may not be able to reply to your email for up to two days. You can read about other ways to access CCAO services here.

Get information:

View property details
File a Freedom of Information Act Request
Frequently Asked Questions

First Name:

Last Name:

E-Mail:

Property Index Number:

Address:

City:

State:

Zip:

Phone Number:

Fax Number:

Business Industry

Your Questions/Comments

Would you like to receive updates on any important news that may affect you?

By Mail

By Email

Where do I find my PIN?

Your 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.

We're here to help.

Contact method	Contact info
By email.	Send us a message
By phone.	(312) 443-7550
On Facebook.	/CookCountyAssessorsOffice