Eagle township
- County:
- Brule County
- County Seat:
- No
- Area (mi²):
- 35.467
- State:
- South Dakota
Eagle township is located in Brule County, South Dakota. Eagle township has a 2026 population of 42. Eagle township is currently declining at a rate of 0% annually and its population has increased by 2.44% since the most recent census, which recorded a population of 41 in 2020.
The median age in Eagle township is 29.8 years: 52.6 years for males, and 29.3 years for females. For every 100 females there are 106.5 males.