In 2022, the population of Krupp was 47, a 2.17% increase year-by-year from 2021. Previously, in 2021, Krupp's population was 46, a decline of 0.00% compared to a population of 46 in 2020.
The median age in Krupp, WA is 22.7, as per 2021 ACS 5-Year Estimates. Of the total population, 11.43% were under the age of 15, 42.86% aged 15 to 29, 45.71% aged 30 to 64, 0.00% aged 65 to 84, and 0.00% were 85 years of age and older.