Rome2Rio uses cookies to help personalize content and show you personalised ads. By proceeding, you accept the use of cookies in accordance with our privacy policy. You may opt out of personalised ads at any time. OK

About Chicago

Chicago, officially the City of Chicago, is the most populous city in the U.S. state of Illinois, and the third-most-populous city in the United States. With an estimated population of 2,705,994 (2018), it is also the most populous city in the Midwestern United States. Chicago is the county seat of Cook County, the second-most-populous county in the US, with a small portion of the northwest side of the city extending into DuPage County near O'Hare Airport. Chicago is the principal city of the Chicago metropolitan area, often referred to as Chicagoland. At nearly 10 million people, the metropolitan area is the third most populous in the United States.

Get the Rome2Rio app

Find the best way to get from A to B, anywhere in the world, on your mobile or tablet.

Compare your options: plane, train, bus, car, ferry, bike share, driving and walking directions all in one search.

Learn more about our apps