Olmsted Falls is a city in Cuyahoga County, Ohio, United States. The population was 8,582 at the 2020 census. A southwestern suburb of …Olmsted Falls is a city in Cuyahoga County, Ohio, United States. The population was 8,582 at the 2020 census. A southwestern suburb of Cleveland, it is part of the Cleveland metropolitan area. The city's main business district is located at the corners of Bagley and Columbia Roads and contains the Grand Pacific Junction, a historic district.