
The Great Chicago Fire in 1871 destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. On the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed.

As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area.

With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest.

state of Illinois and the third-most populous in the United States after New York City and Los Angeles. Chicago ( / ʃ ɪ ˈ k ɑː ɡ oʊ/ ( listen) shih- KAH-goh, locally also / ʃ ɪ ˈ k ɔː ɡ oʊ/ shih- KAW-goh Miami-Illinois: Shikaakwa Ojibwe: Zhigaagong) is the most populous city in the U.S.
