Blaine township
- County:
- Jerauld County
- County Seat:
- No
- Area (mi²):
- 35.538
- State:
- South Dakota
Blaine township is located in Jerauld County, South Dakota. Blaine township has a 2026 population of 73. Blaine township is currently growing at a rate of 2.82% annually and its population has increased by 5.8% since the most recent census, which recorded a population of 69 in 2020.
The median age in Blaine township is 50.8 years: 47.5 years for males, and 71.8 years for females. For every 100 females there are 133.3 males.