Sangamon township
- County:
- Edmunds County
- County Seat:
- No
- Area (mi²):
- 35.184
- State:
- South Dakota
Sangamon township is located in Edmunds County, South Dakota. Sangamon township has a 2026 population of 41. Sangamon township is currently declining at a rate of -2.38% annually and its population has decreased by 0% since the most recent census, which recorded a population of 41 in 2020.
The median age in Sangamon township is 47.8 years: 54.2 years for males, and 47.8 years for females. For every 100 females there are 94.6 males.