Mosher is located in Mellette County, South Dakota. Mosher has a 2025 population of 27 . Mosher is currently declining at a rate of 0% annually and its population has decreased by -6.9% since the most recent census, which recorded a population of 29 in 2020.
The median age in Mosher is 16.8 years: 47.1 years for males, and 16.6 years for females. For every 100 females there are 33.3 males.
Data after 2023 is projected based on recent change
The racial composition of Mosher includes 64.29% White, 35.71% Native American, and smaller percentages for and multiracial populations.
White (64.29%)
Native American (35.71%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 18 | 64.29% |
| Native American | 10 | 35.71% |
Married
Widowed
Divorced
Separated
Never Married