
Allen township
- County:
- Bennett County
- County Seat:
- No
- Area (mi²):
- 36.73
- State:
- South Dakota
Allen township is located in Bennett County, South Dakota. Allen township has a 2025 population of 79. Allen township is currently growing at a rate of 1.28% annually and its population has increased by 3.95% since the most recent census, which recorded a population of 76 in 2020.
The average household income in Allen township is $94,325 with a poverty rate of 7.5%. The median age in Allen township is 30 years: 33.6 years for males, and 8.5 years for females.