Endicott, WA has a population of 240 and is the 23,631st largest city in the United States. The population density is 809 per sq mi which is 737% higher than the Washington average and 793% higher than the national average. The median age in Endicott is 50 which is approximately 33% higher than the Washington average of 38. In Endicott, 65% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 55% of Endicott residents were born in Washington, 45% were born out of state, 0% were born outside of the United States and 0% were foreign born.