Buffalo township
- County:
- Harding County
- County Seat:
- No
- Area (mi²):
- 35.746
- State:
- South Dakota
Buffalo township is located in Harding County, South Dakota. Buffalo township has a 2026 population of 40. Buffalo township is currently growing at a rate of 2.56% annually but its population has decreased by -6.98% since the most recent census, which recorded a population of 43 in 2020.