Waipio Acres, HI has a population of 5,169 and is the 6,310th largest city in the United States. The population density is 5,191 per sq mi which is 3976% higher than the Hawaii average and 5630% higher than the national average. The median age in Waipio Acres is 32 which is approximately 18% lower than the Hawaii average of 39. In Waipio Acres, 55% of the population over 15 years of age are married, 77% speak English and 2% speak Spanish. 57% of Waipio Acres residents were born in Hawaii, 24% were born out of state, 3% were born outside of the United States and 15% were foreign born.