Ewa Beach, HI has a population of 15,165 and is the 2,806th largest city in the United States. The population density is 12,730 per sq mi which is 9895% higher than the Hawaii average and 13951% higher than the national average. The median age in Ewa Beach is 37 which is approximately 5% lower than the Hawaii average of 39. In Ewa Beach, 58% of the population over 15 years of age are married, 56% speak English and 1% speak Spanish. 56% of Ewa Beach residents were born in Hawaii, 9% were born out of state, 3% were born outside of the United States and 32% were foreign born.