We are Here to Help | Cook County Assessor's Office
Effective Monday, September 22, 2025, the Cook County Assessor’s Office located inside the Markham Courthouse will be closed for remodeling until further notice.
Assessor - Cook County Government, Illinois
The mission of the Cook County Assessor’s Office is to deliver accurate and transparent assessments of all residential and commercial properties. We serve every community in the County through ethical …
About the Cook County Assessor's Office
The Assessor's Office is responsible for setting fair and accurate values for 1.8 million parcels of Cook County property. The value of these properties is not determined on an individual basis, but rather by …
Cook County Property Search - cookil.org
This guide walks you through how to actually use the official Cook County Assessor’s online systems to look up property information, see how your home was valued, compare it to similar properties, and …
Cook County Assessor's Office - Chicago, IL (Address and Phone)
Looking for Cook County Assessor's Office property tax assessments, tax rates & GIS? Quickly find Assessor phone number, directions & records (Chicago, IL).
Cook County, IL Property Tax Information
Important: This site provides access to the Cook County Assessor’s Office property records database. To access the records, you can search by your Property Index Number (PIN) or by Address.
Assessor's Office Locations - Cook County
Effective Monday, September 22, 2025, the Cook County Assessor’s Office located inside the Markham Courthouse will be closed for remodeling until further notice.