In 2022, the population of Dumont was 76, a 1.30% decrease year-by-year from 2021. Previously, in 2021, Dumont's population was 77, a decline of 2.53% compared to a population of 79 in 2020.
The median age in Dumont, MN is 53.0, as per 2021 ACS 5-Year Estimates. Of the total population, 16.91% were under the age of 15, 12.50% aged 15 to 29, 60.29% aged 30 to 64, 10.29% aged 65 to 84, and 0.00% were 85 years of age and older.