The Chicago metropolitan area, also known as Chicagoland, is the largest metropolitan area in the U.S. state of Illinois and in the Midwest. The metropolitan area contains the City of Chicago along with its surrounding suburbs, satellite cities, and hinterland, spanning 13 counties across northeast Illinois and northwest Indiana. The MSA had a 2020 census population of 9,618,502, and the combined statistical area, which spans 19 counties and extends into southeast Wisconsin, had a population of nearly 10 million. The Chicago area is the third-largest metropolitan area in the United States, the fourth-largest in North America, and the largest in the Great Lakes megalopolis. Its urban area is the 50th-largest in the world.