Cook County, Illinois

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Cook County, Illinois
Map of Cook County
Illinois's location in the United States
Coordinates: 41°48′N 87°43′W / 41.8°N 87.717°W / 41.8; -87.717Coordinates: 41°48′N 87°43′W / 41.8°N 87.717°W / 41.8; -87.717
Country United States
State Illinois
Region Northern Illinois
Metro area Chicago metropolitan area
Incorporated January 15, 1831
Named for Daniel Cook
County seat Chicago
Incorporated cities 130
 • President Toni R. Preckwinkle
 • Total 1,635 sq mi (4,230 km2)
 • Land 946 sq mi (2,450 km2)
 • Water 689 sq mi (1,780 km2)
Population (2012 (est.)) 5,231,351
 • Density 5,530/sq mi (2,140/km2)
Time zone Central Standard Time (UTC-6)
 • Summer (DST) Central Daylight Time (UTC-5)

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 5,231,000 people live in Cook County.[1] This is 40.6 percent of all the people who live in Illinois. Cook County's population is more than the population of 29 U.S. states. More people live in Cook County than in the seven smallest U.S. states combined.[2]

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Other websites[change | change source]

Media related to Cook County, Illinois at Wikimedia Commons