
Marshfield township
- County:
- Perkins County
- County Seat:
- No
- Area (mi²):
- 71.547
- State:
- South Dakota
Marshfield township is located in Perkins County, South Dakota. Marshfield township has a 2025 population of 40. Marshfield township is currently growing at a rate of 2.56% annually and its population has increased by 5.26% since the most recent census, which recorded a population of 38 in 2020.
The average household income in Marshfield township is $89,800 with a poverty rate of 21.05%. The median age in Marshfield township is 57.3 years: 36.8 years for males, and 57.5 years for females.