In 2022, the population of Mcfall was 121, a 1.68% increase year-by-year from 2021. Previously, in 2021, Mcfall's population was 119, an increase of 0.85% compared to a population of 118 in 2020.
The median age in Mcfall, MO is 39.9, as per 2021 ACS 5-Year Estimates. Of the total population, 20.13% were under the age of 15, 21.43% aged 15 to 29, 50.00% aged 30 to 64, 8.44% aged 65 to 84, and 0.00% were 85 years of age and older.