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Chicago

A city of 2,711,226 people in Illinois
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Chicago in 18201857
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Chicago in 1820, 1857

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About Chicago

Most populous city in Illinois, US
1837Established
2,731,585Population
234.1 sq miArea
587 ftElevation

Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. Located on the western shore of Lake Michigan, it is the third-most populous city in the United States, with a population of 2.74 million at the 2020 census. The Chicago metropolitan area has approximately 9.62 million residents according to the 2020 census and is the third-largest metropolitan area in the country. Chicago is the county seat of Cook County, the second-most populous county in the U.S. Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire de…

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code60601, 60602, 60603
Area code872, 312, 773

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Chicago

Illinois · IL
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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01