Wismer is located in Marshall County, South Dakota. Wismer has a 2025 population of 34 . Wismer is currently declining at a rate of 0% annually and its population has increased by 6.25% since the most recent census, which recorded a population of 32 in 2020.
Data after 2023 is projected based on recent change
The racial composition of Wismer includes 100% White, and smaller percentages for and multiracial populations.
White (100%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 35 | 100% |
Married
Widowed
Divorced
Separated
Never Married