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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 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 is an urban county in the upper northeastern section of the State of Illinois that contains more than 800 local governmental units within its boundaries. With a population of approximately 5.2 million people, it is the second most populous county in the nation and the 19th largest government in the United States (2015 census ...
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.
In 2022, Cook County, IL had a population of 5.23M people with a median age of 37.5 and a median household income of $78,304. Between 2021 and 2022 the population of Cook County, IL declined from 5.27M to 5.23M, a −0.76% decrease and its median household income grew from $72,121 to $78,304, a 8.57% increase.
Mar 25, 2023 · Chicago is its county seat. It’s well-known for its attractive landscapes and outdoor recreation from its forest preserves, fishing, beaches, boating, amusement centers, historic places, and much more. Check out the 15 best things to do in Cook County, Illinois.
Cook County is a county in the American state of Illinois. Chicago is the county seat of Cook County. Los Angeles County, California is the only county with a higher population than Cook County. About 5,276,000 people live in Cook County. This is 41 percent of all the people who live in Illinois.
