Fall River County Flag

Fall River County

State:
South Dakota
County Seat:
Hot Springs

Fall River County's estimated 2026 population is 7,521 with a growth rate of 0.72% in the past year according to the most recent United States census data. Fall River County is the 23rd largest county in South Dakota. The 2010 population was 7,115 and has seen a growth of 5.71% since that time.

7,521
Total Population
4
Population Density (mi²)
23
Population Rank (State)
54 0.72%
Annual Population Growth

Fall River County Population

Demographics

Economics and Income Statistics