Park Ridge is a Chicago suburb with a population at the 2010 census of 37,480 residents. It is located 15 miles (24 km) northwest of downtown Chicago. It is close to O'Hare International Airport, major expressways, and rail transportation. It is a part of the Chicago metropolitan area, bordering two northwestern neighborhoods of Chicago's Far North Side (Edison Park and Norwood Park).As its name suggests, Park Ridge lies on a ridge.