In 2022, the population of Wallace was 44, a 2.22% decrease year-by-year from 2021. Previously, in 2021, Wallace's population was 45, a decline of 0.00% compared to a population of 45 in 2020.
The median age in Wallace, KS is 49.5, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 25.86% aged 15 to 29, 44.83% aged 30 to 64, 29.31% aged 65 to 84, and 0.00% were 85 years of age and older.