Cook County contains 134 municipalities in its region, the most well known being the City of Chicago – which is the County seat where the central offices of Cook County are located.

Cook County was created on January 15, 1831 by an act of the Illinois State Legislature as the 54th county established in Illinois. The unincorporated Fort Dearborn settlement at the mouth …

The Cook County Property Tax Portal is the result of collaboration among the elected officials who take part in the property tax system; the Portal consolidates information and delivers Cook …

Contact Us CAN'T FIND WHAT YOU'RE LOOKING FOR? HERE ARE A FEW HELPFUL SUGGESTIONS. View our Agency Directory to find the agency or office you may be looking …

MissionThe Cook County Clerk is the chief election officer for Cook County. The Clerk is also responsible for maintaining and providing vital records, various aspects of the real estate tax …

Mission 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 …

The Cook County Sheriff offers an online inmate locator service. Click below to go to the Sheriff's website and locate a detainee in Cook County Jail.

The Assessor and the County of Cook try to ensure that the information made available on https://assessorpropertydetails.cookcountyil.gov is accurate and complete. We cannot …

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The Cook County Clerk's office keeps official records of births that occur in Chicago and suburban Cook County. Please click below to be redirected to the Clerk's page on birth certificates.