Belle Prairie township is located in Beadle County, South Dakota. Belle Prairie township has a 2026 population of 47. Belle Prairie township 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 township is 48.1 years: 47.7 years for males, and 58.4 years for females. For every 100 females there are 218.2 males.
Data after 2023 is projected based on recent change
Overall: 48.1 years
Female: 58.4 years
Male: 47.7 years
There are 25 adults, (6 of whom are seniors) in Belle Prairie township.
Female: 11 (31.4%)
Male: 24 (68.6%)
The racial composition of Belle Prairie township includes 88.57% White, 11.43% other race, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 31 | 88.57% |
| Other race | 4 | 11.43% |