Langley, WA has a population of 1,300 and is the 13,553rd largest city in the United States. The population density is 1,290 per sq mi which is 1234% higher than the Washington average and 1324% higher than the national average. The median age in Langley is 59 which is approximately 58% higher than the Washington average of 38. In Langley, 68% of the population over 15 years of age are married, 93% speak English and 2% speak Spanish. 35% of Langley residents were born in Washington, 59% were born out of state, 2% were born outside of the United States and 4% were foreign born.