In 2022, the population of Hamlin was 25, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Hamlin's population was 25, a decline of 0.00% compared to a population of 25 in 2020.
The median age in Hamlin, KS is 18.3, as per 2021 ACS 5-Year Estimates. Of the total population, 40.96% were under the age of 15, 26.51% aged 15 to 29, 32.53% aged 30 to 64, 0.00% aged 65 to 84, and 0.00% were 85 years of age and older.