The total population of Barnesville is estimated to be 186 with 93 males (50.00%) and 93 females (50.00%). There are 0 less females than males in Barnesville.
In 2022, the population of Barnesville was 140, a 0.71% decrease year-by-year from 2021. Previously, in 2021, Barnesville's population was 141, a decline of 0.70% compared to a population of 142 in 2020.
The median age in Barnesville, MD is 45.2, as per 2021 ACS 5-Year Estimates. Of the total population, 18.34% were under the age of 15, 26.04% aged 15 to 29, 31.36% aged 30 to 64, 23.08% aged 65 to 84, and 1.18% were 85 years of age and older.