Superior is a city in and the county seat of Douglas County, Wisconsin, United States. The population was 27,244 at the 2010 census. Located at the junction of U.S. Highways 2 and 53, it is north of and adjacent to both the Village of Superior and the Town of Superior. Superior is at the western end of Lake Superior in northwestern Wisconsin. Bordered by Saint Louis Bay, Superior Bay, and Allouez Bay, it is also framed by two rivers: the Nemadji and the Saint Louis.