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Learn about Cook County's services, programs, news, events and budget. Find information on parking, small business, water affordability, Project Rainbow and more.
- Property Taxes
The Cook County Property Tax Portal is the result of...
- Services
Services - Cook County Government, Illinois
- 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
- 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
- Calendar
The Cook County Department of Veterans Affairs (CCVA) is...
- 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.
Cook County Clerk's Office | Karen A. Yarbrough
Learn about the history, population, government and services of Cook County, the second most populous county in the nation. Cook County contains 134 municipalities, including the City of Chicago, and is governed by a 17-member Board of Commissioners.
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.
3 days ago · 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.
Cook County, Illinois has 944.9 square miles of land area and is the 6th largest county in Illinois by total area. Topics in the Cook County, Illinois data profile include: Populations and People; Income and Poverty; Education; Employment; Housing; Health; Business and Economy; Families and Living Arrangements; Race and Ethnicity
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