O'Hare, located on the far north side of Chicago, is one of the city's 77 community areas. O'Hare International Airport is located within the boundaries of this community area. This community area is the only one that extends outside Cook County; the western edge is in DuPage County.

Chicago O'Hare International Airport is a major international airport serving Chicago, Illinois, located on the city's Northwest Side, approximately 17 miles (27 km) northwest of the Loop business district. Operated by the Chicago Department of Aviation and covering 7,627 acres (3,087 ha), O'Hare has non-stop flights to 214 destinations in North America, South America, the Caribbean, Europe, Africa, Asia, the Middle East, Oceania, and the North Atlantic region as of November 2022. As of 2023, O'Hare is considered the world's most connected airport. It is also U.S.A.'s 4th busiest airport, and 7th biggest airport.