
Fort Riley
- County:
- Geary County
- County Seat:
- No
- Area (mi²):
- 6.411
- State:
- Kansas
Fort Riley is a CDP located in Geary County, Kansas. Fort Riley has a 2025 population of 8,839. Fort Riley is currently growing at a rate of 0.82% annually and its population has increased by 1.36% since the most recent census, which recorded a population of 8,720 in 2020.
The average household income in Fort Riley is $57,781 with a poverty rate of 13.22%. The median age in Fort Riley is 22.3 years: 22 years for males, and 23.5 years for females.