
Gardner
- County:
- Johnson County
- County Seat:
- No
- Area (mi²):
- 12.216
- State:
- Kansas
Gardner is a city located in Johnson County, Kansas. Gardner has a 2025 population of 26,685. Gardner is currently growing at a rate of 2.51% annually and its population has increased by 13.96% since the most recent census, which recorded a population of 23,417 in 2020.
The average household income in Gardner is $105,962 with a poverty rate of 7.14%. The median age in Gardner is 31.3 years: 30.9 years for males, and 31.9 years for females.