
Interstate 294, also known as the Tri-State Tollway, passes through Maine Township. Even though they have a Des Plaines (and in some cases a Niles) mailing address, the addresses follow Chicago's numbering system, where the starting points are State and Madison. The township also contains unincorporated sections which mostly use a Des Plaines mailing address.

Maine Township contains portions of the Chicago suburbs of Park Ridge, Morton Grove, Niles, Glenview, Des Plaines and Rosemont. Maine Township is located in Cook County, directly north and east of O'Hare International Airport in Chicago. The population was 140,600 at the 2020 census.

Maine Township is one of 29 townships in Cook County, Illinois, United States.
