Chicago, Illinois USA – Chicago is the largest city by population in the state of Illinois and the Midwest of the United States. Adjacent to Lake Michigan, the Chicago metropolitan area (commonly referred to as Chicagoland) has a population of over 9.7 million people in three U.S. states, Illinois, Wisconsin and Indiana, and was the third largest metropolitan area in 2000. One of the largest cities in North America, Chicago is among the world’s twenty-five largest urban areas by population, […]