The Cook County websites have a wealth of information on property taxes and all things related. Here’s a short excerpt from the Cook County Clerk’s site on what a Property Index Number is and how to find it. The full details of this article can be found at https://www.cookcountyclerk.com/service/about-property-index-number-pin.
How to Read a PIN
The PIN is a 14-digit number composed of a 10-digit base that is modified for condominiums and leaseholds by adding a four-digit unit suffix. The basic PIN structure is: AA-SS-BBB-PPP-UUUU
- AA is the AREA number (sequential township)
- SS is the SUBAREA number (section)
- BBB is the BLOCK number
- PPP is the PARCEL number
- UUUU is the UNIT number for condominiums and leaseholds (zeros in this portion of the PIN indicate non-condo and non-leasehold PINs)
This system uniquely identifies each tax parcel in Cook County and makes it possible for tax map users to quickly locate a parcel on a tax map.
PIN = AA-SS-BBB-PPP-UUUU
PIN = 12-26-328-009-0000
How Can I look up my PIN
You can find your PIN through an address search on the Cook County website at https://www.cookcountyassessor.com/address-search.