In 2022, the population of Gantt was 197, a 1.03% increase year-by-year from 2021. Previously, in 2021, Gantt's population was 195, a decline of 0.51% compared to a population of 196 in 2020.
The median age in Gantt, AL is 56.4, as per 2021 ACS 5-Year Estimates. Of the total population, 9.09% were under the age of 15, 6.99% aged 15 to 29, 44.06% aged 30 to 64, 39.86% aged 65 to 84, and 0.00% were 85 years of age and older.