Banner township
- County:
- Beadle County
- County Seat:
- No
- Area (mi²):
- 35.322
- State:
- South Dakota
Banner township is located in Beadle County, South Dakota. Banner township has a 2026 population of 48. Banner township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 48 in 2020.
The median age in Banner township is 64.2 years: 67.1 years for males, and 61.5 years for females. For every 100 females there are 106.3 males.