Fall River County, South Dakota

Fall River County
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 43°15′N 103°31′W / 43.25°N 103.52°W / 43.25; -103.52
Country United States
State South Dakota
FoundedApril 3, 1883
Named afterFall River
SeatHot Springs
Largest cityHot Springs
Area
  Total
1,749 sq mi (4,530 km2)
  Land1,740 sq mi (4,500 km2)
  Water9.2 sq mi (24 km2)  0.5%
Population
 (2020)
  Total
6,973
  Estimate 
(2024)
7,359
  Density4.0/sq mi (1.5/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websitefallriver.sdcounties.org

Fall River County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 6,973. Its county seat is Hot Springs. The county was founded in 1883. It is named for the Fall River which runs through it.