Cook County Assessor's Office Values
Deliver accurate and uniform assessments, with timely and informative notices, in compliance with industry standards and guided by best practices.
Build transparency into every part of the office—making services more effective and efficient—and earn the public's trust.
Create an office culture of professionalism, inclusion and public accountability, with engaged employees who take pride in the delivery of high-quality, accessible services for all.
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.