City of Chicago, IL

About
Chicago is the United States' third largest city, with 2.8 million inhabitants and 9.8 million inhabitants in the metropolitan area. Chicago is rated an Alpha + City by the GaWC, with the world´s 4th biggest city GDP (after Tokyo, New York Los Angeles) and the world's 3rd largest inter-modal port, after Hong Kong and Singapore. Chicago's economy is mainly based in finance, commerce, industry and telecommunications, and is fueled by the large number of corporations who have their headquarters there.