
Andover
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 0.27
- State:
- South Dakota
Andover is a town located in Day County, South Dakota. Andover has a 2025 population of 68. Andover 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 68 in 2020.
The average household income in Andover is $63,368 with a poverty rate of 5.56%. The median age in Andover is 61.7 years: 61.8 years for males, and 61.6 years for females.