In 2022, the population of Boy River was 29, a 7.41% increase year-by-year from 2021. Previously, in 2021, Boy River's population was 27, a decline of 0.00% compared to a population of 27 in 2020.
The median age in Boy River, MN is 29.7, as per 2021 ACS 5-Year Estimates. Of the total population, 33.33% were under the age of 15, 23.81% aged 15 to 29, 33.33% aged 30 to 64, 9.52% aged 65 to 84, and 0.00% were 85 years of age and older.