Belle Prairie is located in Beadle County, South Dakota. Belle Prairie has a 2025 population of 47 . Belle Prairie is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 47 in 2020.
The median age in Belle Prairie is 24.5 years: 10.3 years for males, and 32.3 years for females. For every 100 females there are 172.7 males.
Data after 2023 is projected based on recent change
The racial composition of Belle Prairie includes 95.56% White, 4.44% other race, and smaller percentages for and multiracial populations.
White (95.56%)
Other race (4.44%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 86 | 95.56% |
| Other race | 4 | 4.44% |
Married
Widowed
Divorced
Separated
Never Married