Contact Us

Have questions or need assistance from our office? 

Cook County Assessor’s Office staff will continue to provide services even if our office is closed to the public. At this time, all are encouraged to contact us online. Please note that our staff responds personally to every message. We appreciate your patience as we try to assist all taxpayers. 

  • Send us a message online, using the portal below.
  • Send us a message on Twitter.
  • Call us: (312) 443-7550
  • Contact us by mail: 
    118 N. Clark Street, Rm 320
    Chicago, IL 60602 

 

Online

Before we get started

A couple of notes:

Locate your property identification number

Search your address on cookcountyassessor.com. Your PIN is not required for a contact, but may provide helpful context.

Timeline

When you contact us through this portal, expected response time is within a week. Your activity through the portal is tracked, so you are able to reference all previous contacts in one centralized place. 

Contact Us

Phone

Locate your property identification number

Search your address on cookcountyassessor.com. Your PIN is not required for a contact, but may provide helpful context.

Give us a call

Our staff are able to assist you Monday through Friday 9 am to 4:30 pm (excluding holidays). For assistance within these hours, please call us at (312) 443-7550.

 

In Person

Locate your property identification number

Search your address on cookcountyassessor.com. Your PIN is not required for a contact, but may provide helpful context.

Make an appointment

Schedule an appointment here. 

Come to our office

Visit us between 8:30 AM - 5:00 PM Monday through Friday. We're closed on weekends and holidays.

Assistance With First Installment Tax Bills

First Installment Cook County property tax bills are available at cookcountytreasurer.com. They were due March 2, 2022, but payment could be made any time before May 3 without accruing any late fees or penalties. Note that exemptions are not applied to your first installment bill.

Looking for exemption applications? Note that many will auto-renew. If you are a first-time applicant, we encourage you to apply online.

I have two PINs for my property and think I am being charged twice.

Your property may be prorated over two parcels. This does not mean you are paying more in taxes; it simply means that your home straddles two parcels and a portion of the assessed value is spread over those two parcels. This results in two separate Property Index Numbers (PINs) but no added tax liability. You may find more information about consolidating your PINS here: https://www.cookcountyassessor.com/divisions.

Please Note: Filing a consolidation will not affect or reduce the amount of your overall assessment of your property, or your taxes due.


I recently moved. How can I apply for exemptions for tax year 2021?

The Cook County Assessor’s Office will send applications directly to tens of thousands of new homeowners who purchased their property before January 1, 2021. If you are one of these new homeowners, and our Office has received data about your home purchase, your application should arrive in the mail in March 2022, or you can apply online.

Please Note: If you received the Homeowner Exemption on your second installment bill last year and your residency did not change, you do not have to reapply. You will continue to receive the benefits of the exemption each year.


I have an appeal currently being processed. Should I pay the bill I just received?

Yes. Your first installment bill for tax year 2020 is not affected by an appeal of a 2020 assessment (or a 2021 assessment).

I do not know my Property Index Number (PIN). How can I obtain it?

You may locate your property index number on the following:

  • your tax bill,
  • your property deed,
  • your closing documents from the purchase of your home,
  • your reassessment notice, and
  • notices from the Assessor’s Office if the underlying parcel has been divided, (i.e. condominiums, new subdivisions)

You may also find it at https://www.cookcountyassessor.com/address-search

Where do I get a copy of the legal description for my property?

In order to obtain a legal description of your property, you must contact the Cook County Clerk's Office (the Mapping Department). 312-603-5645.

https://www.cookcountyclerk.com/agency/property-taxes

The information is also located on your warranty deed.


How can I report an erroneous exemption?

You can anonymously report erroneous exemptions at the following link on the Assessor’s website:

http://whistleblowing.cookcountyassessor.com