Long Beach, WA has a population of 1,395 and is the 13,110th largest city in the United States. The population density is 1,010 per sq mi which is 945% higher than the Washington average and 1015% higher than the national average. The median age in Long Beach is 53 which is approximately 41% higher than the Washington average of 38. In Long Beach, 47% of the population over 15 years of age are married, 89% speak English and 11% speak Spanish. 34% of Long Beach residents were born in Washington, 58% were born out of state, 0% were born outside of the United States and 7% were foreign born.