In 2022, the population of Alton was 30, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Alton's population was 30, a decline of 0.00% compared to a population of 30 in 2020.
The median age in Alton, IN is 53.4, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 35.29% aged 15 to 29, 50.00% aged 30 to 64, 14.71% aged 65 to 84, and 0.00% were 85 years of age and older.