Fall River County is a county located in the state of South Dakota. Based on the 2010 census, the population was 7,094. Its county seat is Hot Springs. The county was founded in 1883. It is named for Fall River which runs through it.
Fall River is named for the Fall River.
County QuickFacts: CensusBureau Quick Facts
Fall River County organized as a county in Dakota Territory in November 1883 and Hot Springs was chosen as the county seat. The county was once known as Forsythe County.
As reported by the Census Bureau, the county has a total area of 1,749 square miles (4,530 km2), of which,
1,740 square miles (4,506 km2) of it is land and 9 square miles (24 km2) of it (0.53%) is water.
Bordering counties are as follows: