Mission is a small city is South-central South Dakota, located within the Rosebud Indian Reservation.
The economy of the city is not large, due to the small population. It is mainly comprised of services that support the region, such as businesses, schools, and government headquarters.
Mission was founded as a city in 1915, though its post office dates back to 1912.
The name of the city comes from the missions put on by various religious organizations to "educate" the natives that lived in the area.