Mellette County's estimated 2026 population is 2,225 with a growth rate of 4.12% in the past year according to the most recent United States census data. Mellette County is the 57th largest county in South Dakota. The 2010 population was 2,026 and has seen a growth of 9.82% since that time.
Data after 2023 is projected based on recent change
Overall: 37.5 years
Female: 38 years
Male: 36.4 years
There are 1,386 adults, (319 of whom are seniors) in Mellette County.
Female: 989 (50.9%)
Male: 954 (49.1%)
The racial composition of Mellette County includes 56.41% Native American, 34.69% White, and smaller percentages for other race, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| Native American | 1,096 | 56.41% |
| White | 674 | 34.69% |
| Two or more races | 156 | 8.03% |
| Other race | 10 | 0.51% |
| Native Hawaiian or Pacific Islander | 7 | 0.36% |
Mellette County's average per capita income is $32,981. Household income levels show a median of $54,076. The poverty rate stands at 41.74%.
Name | Median | Mean |
|---|---|---|
| Married Families | $70,625 | - |
| Families | $56,081 | $83,180 |
| Households | $54,076 | $74,230 |
| Non Families | $32,279 | $52,578 |
Average Income
Median Household Income
Poverty Rate