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 a mass appraisal system. The mass appraisal system is a way to put fairness into the entire assessment process.

Government

Cook County Assessor's Office

Wayne Williams

Michael Wagner

Tatia Gibbons

Nicole Jardine

Nathan Bernacchi

Mirella Villafuerte

Kelwin Harris

David Morrison

Angelina Romero

Valuation and Property Analysis

Data and Analytics

Leadership Team

Human Resources and Learning

Policy and Investigations

Communications and Outreach

Legal and Compliance

Teams at Cook County Assessor's Office