In 2022, the population of Folsom was 46, a 4.17% decrease year-by-year from 2021. Previously, in 2021, Folsom's population was 48, a decline of 0.00% compared to a population of 48 in 2020.
The median age in Folsom, NM is 34.2, as per 2021 ACS 5-Year Estimates. Of the total population, 43.66% were under the age of 15, 0.00% aged 15 to 29, 49.30% aged 30 to 64, 7.04% aged 65 to 84, and 0.00% were 85 years of age and older.