Mandan is a city on the eastern border of Morton County and the eighth-most populous city in North Dakota. Founded in 1879 on the west side of the upper Missouri River, it was designated in 1881 as the county seat of Morton County. The population was 24,206 at the 2020 census. Across the Missouri River from Bismarck, Mandan is a core city of the Bismarck-Mandan Metropolitan Statistical Area.
The city was named after the historic indigenous Mandan of the area. The Mandan are now part of the Three Affiliated Tribes of the Fort Berthold Reservation, spanning the upper Missouri River in the western part of the state. Their people also live in cities of the state and other areas. In the 2010 census, nearly 5% of the people in Mandan identified as Native American.
The Mandan Indian village at the southern base of Crying Hill prominent in east Mandan was recorded as early as 1738 and called Good Fur Robe, after their chief. The settlement was also