In 2022, the population of Andover was 66, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Andover's population was 66, a decline of 1.49% compared to a population of 67 in 2020.
The median age in Andover, SD is 61.9, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 3.64% aged 15 to 29, 63.64% aged 30 to 64, 10.91% aged 65 to 84, and 21.82% were 85 years of age and older.