Frankfort township
- County:
- Spink County
- County Seat:
- No
- Area (mi²):
- 35.105
- State:
- South Dakota
Frankfort township is located in Spink County, South Dakota. Frankfort township has a 2026 population of 44. Frankfort township is currently declining at a rate of -2.22% annually and its population has decreased by -2.22% since the most recent census, which recorded a population of 45 in 2020.
The median age in Frankfort township is 72.3 years: 69 years for males, and 78.2 years for females. For every 100 females there are 100.0 males.