Kualapuu, HI has a population of 2,072 and is the 10,806th largest city in the United States. The population density is 71 per sq mi which is 45% lower than the Hawaii average and 22% lower than the national average. The median age in Kualapuu is 35 which is approximately 9% lower than the Hawaii average of 39. In Kualapuu, 55% of the population over 15 years of age are married, 76% speak English and 0% speak Spanish. 82% of Kualapuu residents were born in Hawaii, 8% were born out of state, 0% were born outside of the United States and 10% were foreign born.