Easton, WA has a population of 377 and is the 21,198th largest city in the United States. The population density is 117 per sq mi which is 21% higher than the Washington average and 30% higher than the national average. The median age in Easton is 44 which is approximately 18% higher than the Washington average of 38. In Easton, 57% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 59% of Easton residents were born in Washington, 41% were born out of state, 0% were born outside of the United States and 0% were foreign born.