The total population of Pennington is estimated to be 628 with 249 males (39.65%) and 379 females (60.35%). There are 130 more females than males in Pennington.
In 2022, the population of Pennington was 329, a 0.30% decrease year-by-year from 2021. Previously, in 2021, Pennington's population was 330, a decline of 0.00% compared to a population of 330 in 2020.
The median age in Pennington, AL is 39.8, as per 2021 ACS 5-Year Estimates. Of the total population, 22.35% were under the age of 15, 11.26% aged 15 to 29, 53.48% aged 30 to 64, 7.28% aged 65 to 84, and 5.63% were 85 years of age and older.