Mellette County's estimated 2025 population is 1,807 with a growth rate of -1.2% in the past year according to the most recent United States census data. Mellette County is the 60th largest county in South Dakota. The 2010 population was 2,026 and has seen a growth of -10.81% since that time.
Data after 2023 is projected based on recent change
The racial composition of Mellette County includes 62.07% Native American, 31.57% White, and smaller percentages for Native Hawaiian or Pacific Islander, other race, Black or African American, Asian and multiracial populations.
Native American
White
Two or more races
Native Hawaiian or Pacific Islander
Other race
Black or African American
Asian
Race | Population | Percentage (of total) |
|---|---|---|
| Native American | 1,268 | 62.07% |
| White | 645 | 31.57% |
| Two or more races | 113 | 5.53% |
| Native Hawaiian or Pacific Islander | 6 | 0.29% |
| Other race | 6 | 0.29% |
| Black or African American | 5 | 0.24% |
| Asian | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Mellette County's average per capita income is $32,439. Household income levels show a median of $51,364. The poverty rate stands at 46.19%.
Name | Median | Mean |
|---|---|---|
| Married Families | $67,841 | - |
| Families | $53,090 | $65,493 |
| Households | $51,364 | $58,700 |
| Non Families | $31,656 | $39,444 |
Average Income
Median Household Income
Poverty Rate