
Denison
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 0.112
- State:
- Kansas
Denison is a city located in Jackson County, Kansas. Denison has a 2025 population of 143. Denison is currently declining at a rate of 0% annually and its population has decreased by -1.38% since the most recent census, which recorded a population of 145 in 2020.
The average household income in Denison is $62,703 with a poverty rate of 8.18%. The median age in Denison is 54.1 years: 50.4 years for males, and 54.8 years for females.