In 2022, the population of Barlow was 136, a 0.74% increase year-by-year from 2021. Previously, in 2021, Barlow's population was 135, an increase of 1.50% compared to a population of 133 in 2020.
The median age in Barlow, OR is 53.8, as per 2021 ACS 5-Year Estimates. Of the total population, 9.78% were under the age of 15, 5.43% aged 15 to 29, 78.26% aged 30 to 64, 5.98% aged 65 to 84, and 0.54% were 85 years of age and older.