Fall River County's 2026 population is estimated at 7,339, reflecting a -0.14% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fall River County is the 25th largest county in South Dakota. The 2010 population was 7,115 and has grown 3.15% since 2010.
Data after 2023 is projected based on recent change
Overall: 55.3 years
Female: 56.6 years
Male: 53.7 years
There are 6,080 adults, (2,382 of whom are seniors) in Fall River County.
Female: 3,662 (50.5%)
Male: 3,596 (49.5%)
The racial composition of Fall River County includes 83.89% White, 5.18% Native American, and smaller percentages for other race, Asian, Native Hawaiian or Pacific Islander, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 6,089 | 83.89% |
| Two or more races | 445 | 6.13% |
| Native American | 376 | 5.18% |
| Other race | 147 | 2.03% |
| Asian | 140 | 1.93% |
| Native Hawaiian or Pacific Islander | 47 | 0.65% |
| Black or African American | 14 | 0.19% |
Fall River County 's average per capita income is $44,821. Household income levels show a median of $67,917. The poverty rate stands at 16.57%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $93,079 | - |
| Families | $90,112 | $91,089 |
| Households | $67,917 | $82,682 |
| Non Families | $47,688 | $65,612 |
Average Income
Median Household Income
Poverty Rate