East Renton Highlands, WA has a population of 11,549 and is the 3,524th largest city in the United States. The population density is 1,033 per sq mi which is 968% higher than the Washington average and 1040% higher than the national average. The median age in East Renton Highlands is 44 which is approximately 17% higher than the Washington average of 38. In East Renton Highlands, 62% of the population over 15 years of age are married, 89% speak English and 5% speak Spanish. 58% of East Renton Highlands residents were born in Washington, 33% were born out of state, 1% were born outside of the United States and 8% were foreign born.