In 2022, the population of Lexa was 188, a 3.09% decrease year-by-year from 2021. Previously, in 2021, Lexa's population was 194, a decline of 4.43% compared to a population of 203 in 2020.
The median age in Lexa, AR is 57.5, as per 2021 ACS 5-Year Estimates. Of the total population, 13.11% were under the age of 15, 3.28% aged 15 to 29, 51.64% aged 30 to 64, 14.75% aged 65 to 84, and 17.21% were 85 years of age and older.