Smithville township
- County:
- Meade County
- County Seat:
- No
- Area (mi²):
- 41.574
- State:
- South Dakota
Smithville township is located in Meade County, South Dakota. Smithville township has a 2026 population of 9. Smithville township is currently growing at a rate of 12.5% annually and its population has increased by 12.5% since the most recent census, which recorded a population of 8 in 2020.