Hamlin County's 2026 population is estimated at 6,888, reflecting a 2.17% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Hamlin County is the 27th largest county in South Dakota. The 2010 population was 5,915 and has grown 16.45% since 2010.
Data after 2023 is projected based on recent change
Overall: 31.8 years
Female: 31.4 years
Male: 32.2 years
There are 4,262 adults, (911 of whom are seniors) in Hamlin County.
Female: 3,089 (48.5%)
Male: 3,284 (51.5%)
The racial composition of Hamlin County includes 91.95% White, 3.3% other race, and smaller percentages for Native American, Asian, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 5,860 | 91.95% |
| Two or more races | 253 | 3.97% |
| Other race | 210 | 3.3% |
| Native American | 23 | 0.36% |
| Asian | 18 | 0.28% |
| Black or African American | 9 | 0.14% |
Hamlin County 's average per capita income is $52,673. Household income levels show a median of $87,101. The poverty rate stands at 6.86%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $102,614 | - |
| Families | $95,266 | $125,110 |
| Households | $87,101 | $109,883 |
| Non Families | $43,468 | $59,360 |
Average Income
Median Household Income
Poverty Rate