Cook County Assessor's Office in Chicago, Illinois

About Cook County Assessor's Office

The Cook County Assessor's Office, located in Chicago, Illinois, determines the value of all taxable property in Cook County, IL. Taxable property includes land and commercial properties, often referred to as real property or real estate, and fixed assets owned by businesses, often referred to as personal property. Property assessments performed by the Assessor are used to determine the Cook County property taxes owed by individual taxpayers.

• Cook County, IL property tax assessments
• Property tax appeals and reassessments
• Paying property tax bills and due dates
• Property tax rates and tax roll
• Cook County GIS maps, property maps, and plat maps
• Property records and deeds in Cook County