Alton is a city located in Osborne County, Kansas. Alton has a 2026 population of 90. Alton is currently declining at a rate of -1.1% annually and its population has decreased by -8.16% since the most recent census, which recorded a population of 98 in 2020.
The median age in Alton is 34.3 years: 29.8 years for males, and 52.5 years for females. For every 100 females there are 101.7 males.
Data after 2023 is projected based on recent change
Overall: 34.3 years
Female: 52.5 years
Male: 29.8 years
There are 99 adults, (29 of whom are seniors) in Alton.
Female: 60 (49.6%)
Male: 61 (50.4%)
The racial composition of Alton includes 98.35% White, and smaller percentages for Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 119 | 98.35% |
| Black or African American | 2 | 1.65% |