Fall River County | |
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![]() 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 | |
Country | ![]() |
State | ![]() |
Founded | April 3, 1883 |
Named for | Fall River |
Seat | Hot Springs |
Largest city | Hot Springs |
Area | |
• Total | 1,749 sq mi (4,530 km2) |
• Land | 1,740 sq mi (4,500 km2) |
• Water | 9.2 sq mi (24 km2) 0.5% |
Population (2020) | |
• Total | 6,973 |
• Estimate (2023) | 7,393 ![]() |
• Density | 4.0/sq mi (1.5/km2) |
Time zone | UTC−7 (Mountain) |
• Summer (DST) | UTC−6 (MDT) |
Congressional district | At-large |
Website | fallriver |
Fall River County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 6,973.[1] Its county seat is Hot Springs.[2] The county was founded in 1883. It is named for Fall River which runs through it.[3]