Valley township
- County:
- Douglas County
- County Seat:
- No
- Area (mi²):
- 36.047
- State:
- South Dakota
Valley township is located in Douglas County, South Dakota. Valley township has a 2025 population of 137. Valley township is currently growing at a rate of 1.48% annually and its population has increased by 4.58% since the most recent census, which recorded a population of 131 in 2020.
The median age in Valley township is 12.2 years: 12.1 years for males, and 16.2 years for females.