The total population of Bairoil is estimated to be 162 with 104 males (64.20%) and 58 females (35.80%). There are 46 less females than males in Bairoil.
In 2022, the population of Bairoil was 66, a 1.49% decrease year-by-year from 2021. Previously, in 2021, Bairoil's population was 67, a decline of 1.47% compared to a population of 68 in 2020.
The median age in Bairoil, WY is 57.9, as per 2021 ACS 5-Year Estimates. Of the total population, 23.67% were under the age of 15, 5.33% aged 15 to 29, 42.60% aged 30 to 64, 28.40% aged 65 to 84, and 0.00% were 85 years of age and older.