
Andover township
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 71.162
- State:
- South Dakota
Andover township is located in Day County, South Dakota. Andover township has a 2025 population of 117. Andover township is currently growing at a rate of 0.86% annually and its population has increased by 4.46% since the most recent census, which recorded a population of 112 in 2020.
The average household income in Andover township is $114,210 with a poverty rate of 0%. The median age in Andover township is 57.3 years: 59.4 years for males, and 45.4 years for females.