Alcester township
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 35.135
- State:
- South Dakota
Alcester township is located in Union County, South Dakota. Alcester township has a 2026 population of 307. Alcester township is currently growing at a rate of 2.68% annually and its population has increased by 8.48% since the most recent census, which recorded a population of 283 in 2020.
The median household income in Alcester township is $110,156 with a poverty rate of 0%. The median age in Alcester township is 47.8 years: 57.1 years for males, and 37.5 years for females. For every 100 females there are 67.1 males.