
Andover
- County:
- Butler County
- County Seat:
- No
- Area (mi²):
- 10.415
- State:
- Kansas
Andover is a city located in Butler County, Kansas. Andover has a 2025 population of 16,380. Andover is currently growing at a rate of 1.76% annually and its population has increased by 9.46% since the most recent census, which recorded a population of 14,965 in 2020.
The average household income in Andover is $137,183 with a poverty rate of 3.21%. The median age in Andover is 36.2 years: 34.5 years for males, and 37.4 years for females.