Cook County Assessor - This site provides information about the Cook County Assessor's Office, which is responsible for assessing all properties in Cook County. You can use this site to look up the assessment and characteristics of your property as well as the other 1.8 million parcels of property in the county. This information can be used for appealing your properties assessed value online. It also contains information regarding property tax exemptions qualifications.
Cook County Treasurer - The Treasurer's website allows you to check the status of your property tax bill payments as well as directing you where and how to pay your tax bill.