This article is about the
U.S. city in the state of
Illinois. For other uses, see
Chicago (disambiguation). Chicago ( or ; shi-kah-go, or shi-kaw-go) is the largest city in the state of
Illinois, the largest in the
Midwest. With a population of nearly 2.9 million people, the city is the
third largest in the
United States. Rich in history and renowned for its architecture, Chicago is classified as an
alpha world city. It is the anchor of the
Chicago metropolitan area, commonly called Chicagoland, which has a population of over 9.5 million people in Illinois,
Wisconsin and
Indiana, making it the
third largest metropolitan area in the U.S. The City of Chicago is almost entirely located in
Cook County, Illinois, with a small portion in
DuPage County, while the metropolitan area extends over several counties.
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