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Find information and services for Cook County residents, businesses and visitors. Learn about Project Rainbow, discount parking, manufacturing apprenticeships, solid waste and more.
- Property Taxes
The Cook County Property Tax Portal is the result of...
- Services
Services - Cook County Government, Illinois | Cook County
- Birth Certificate
The Cook County Clerk's office keeps official records of...
- Contact Us
For non-emergencies and general inquiries about the County,...
- Locate an Inmate
The Cook County Sheriff offers an online inmate locator...
- Agencies
Agencies - Cook County Government, Illinois | Cook County
- Jobs and Employment
Cook County offers the chance to participate in a strong...
- I Want To
County Clerk; Chief Judge; Recorder of Deeds; Sheriff;...
- Officials
Officials - Cook County Government, Illinois | Cook County
- Calendar
Calendar - Cook County Government, Illinois | Cook County
- Property Taxes
Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40 percent of all residents of Illinois live within Cook County. As of 2020, the population was 5,275,541.
Learn about the history, population, government and services of Cook County, Illinois, the second most populous county in the nation. Find out how Cook County is governed by a 17-member Board of Commissioners and a County Board President.
The most important components of Illinois legislative history are transcripts of floor debates of the House of Representatives and the Senate. The Cook County Law Library has the House and Senate Floor debates available on microfiche from the 77th G.A. (October 1971) through the 92nd G.A. (2001-2002).
The government of Cook County, Illinois, is primarily composed of the Board of Commissioners, other elected officials such as the Sheriff, State's Attorney, Treasurer, Board of Review, Clerk, Assessor, Cook County Circuit Court judges and Circuit Court Clerk, as well as numerous other officers and entities.
Jun 18, 2024 · Explore the population changes, racial and ethnic makeup, age distribution, and migration patterns of Cook County, IL from 2010 to 2022. See how the county ranks among other counties and states in the US and compare the data sources and methods.
Learn about the population, diversity, economy, education, and health of Cook County, IL, the most populous county in Illinois and home to Chicago. See charts, maps, and data sources for various indicators and compare with other geographies.
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