Minneapolis, officially the City of Minneapolis, is the county seat of Hennepin County, the largest city in Minnesota, and the 47th-largest in the United States. As of 2013, the estimated population of the city of Minneapolis was 400,070. Minneapolis lies on both banks of the Mississippi River, just north of the river’s confluence with the Minnesota River. Known as the Twin Cities, Minneapolis–Saint Paul is the 14th-largest metropolitan area, with the area containing approximately 3.8 million residents.