
Alton township
- County:
- Brookings County
- County Seat:
- No
- Area (mi²):
- 35.167
- State:
- South Dakota
Alton township is located in Brookings County, South Dakota. Alton township has a 2025 population of 260. Alton township is currently growing at a rate of 0.78% annually and its population has increased by 6.56% since the most recent census, which recorded a population of 244 in 2020.
The average household income in Alton township is $78,559 with a poverty rate of 15.08%. The median age in Alton township is 58.1 years: 58.3 years for males, and 56.9 years for females.