Krupp, WA has a population of 41 and is the 28,367th largest city in the United States. The population density is 70 per sq mi which is 28% lower than the Washington average and 23% lower than the national average. The median age in Krupp is 54 which is approximately 43% higher than the Washington average of 38. In Krupp, 28% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 56% of Krupp residents were born in Washington, 27% were born out of state, 0% were born outside of the United States and 17% were foreign born.