Chicago metropolitan area
Clash Royale CLAN TAG#URR8PPP "Chicagoland" redirects here. For other uses, see Chicagoland (disambiguation). Metropolitan region in , United States Chicago Metropolitan Area Chicago-Naperville-Michigan City, IL-IN-WI CSA Metropolitan region Chicago Country United States State(s) Illinois Indiana Wisconsin Principal cities Chicago - Aurora - Elgin - Hammond - Joliet - Kenosha - Michigan City - Naperville Area • Metro 10,856 sq mi (28,120 km 2 ) Highest elevation [1] 673 ft (205 m) Lowest elevation [1] 579 ft (176 m) Population (2015 estimate) • Metropolitan region 9,472,676 • Density 1,318/sq mi (509/km 2 ) Ranked 3rd in the US Time zone CST (UTC-6) • Summer (DST) CDT (UTC-5) Area codes 219, 224/847, 262, 312/872, 331/630, 574, 708, 773/872 and 779/815 The Chicago metropolitan area , or Chicagoland , is the metropolitan area that includes the city of Chicago, Illinois, and its suburbs. With an estimated MSA population of 9.5 million people and CSA po...