Chicago is located in northeast Illinois in the United States. It sits on the southwest coast of Lake Michigan in the Midwest and is spread over an area of 60,000 hectares.
The city of Chicago is the third largest city in the United States and the largest city in the American Midwest, with a population of more than 2.5 million people, according to the 2010 census. Two rivers flow through the city, the Chicago and Calumet, which both flow into Lake Michigan, one of the Great Lakes. Nicknames for Chicago include "the Windy City," "Second City" and "the City that Works."