Kahului, HI has a population of 30,164 and is the 1,415th largest city in the United States. The population density is 2,097 per sq mi which is 1546% higher than the Hawaii average and 2214% higher than the national average. The median age in Kahului is 38 which is approximately 1% lower than the Hawaii average of 39. In Kahului, 55% of the population over 15 years of age are married, 61% speak English and 3% speak Spanish. 56% of Kahului residents were born in Hawaii, 10% were born out of state, 2% were born outside of the United States and 33% were foreign born.