The total population of Buchanan is estimated to be 1,238 with 549 males (44.35%) and 689 females (55.65%). There are 140 more females than males in Buchanan.
In 2022, the population of Buchanan was 979, a 4.26% increase year-by-year from 2021. Previously, in 2021, Buchanan's population was 939, an increase of 0.43% compared to a population of 935 in 2020.
The median age in Buchanan, GA is 38.1, as per 2021 ACS 5-Year Estimates. Of the total population, 14.85% were under the age of 15, 26.07% aged 15 to 29, 46.73% aged 30 to 64, 10.33% aged 65 to 84, and 2.02% were 85 years of age and older.