Anacortes, WA has a population of 16,229 and is the 2,633rd largest city in the United States. The population density is 1,386 per sq mi which is 1334% higher than the Washington average and 1430% higher than the national average. The median age in Anacortes is 49 which is approximately 30% higher than the Washington average of 38. In Anacortes, 65% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 42% of Anacortes residents were born in Washington, 50% were born out of state, 2% were born outside of the United States and 7% were foreign born.