Dumarce township
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 27.521
- State:
- South Dakota
Dumarce township is located in Marshall County, South Dakota. Dumarce township has a 2026 population of 48. Dumarce township is currently declining at a rate of 0% annually and its population has increased by 4.35% since the most recent census, which recorded a population of 46 in 2020.