Star Valley township
- County:
- Tripp County
- County Seat:
- No
- Area (mi²):
- 41.982
- State:
- South Dakota
Star Valley township is located in Tripp County, South Dakota. Star Valley township has a 2025 population of 24. Star Valley 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 24 in 2020.