The total population of Denison is estimated to be 145 with 57 males (39.31%) and 88 females (60.69%). There are 31 more females than males in Denison.
In 2022, the population of Denison was 144, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Denison's population was 144, a decline of 0.69% compared to a population of 145 in 2020.
The median age in Denison, KS is 51.6, as per 2021 ACS 5-Year Estimates. Of the total population, 19.33% were under the age of 15, 12.61% aged 15 to 29, 49.58% aged 30 to 64, 18.49% aged 65 to 84, and 0.00% were 85 years of age and older.