Plymouth is a city in Hennepin County, Minnesota, United States. The population was 68,978 at the 2005 census, making it the seventh largest city in the state of Minnesota. Plymouth operates under a council-manager form of government. The council comprises a mayor and six council members. Plymouth apartments for rent comparison page shows most up to date rent information on Plymouth apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.