Maunawili, HI has a population of 2,124 and is the 10,668th largest city in the United States. The population density is 1,162 per sq mi which is 812% higher than the Hawaii average and 1182% higher than the national average. The median age in Maunawili is 50 which is approximately 29% higher than the Hawaii average of 39. In Maunawili, 73% of the population over 15 years of age are married, 93% speak English and 1% speak Spanish. 62% of Maunawili residents were born in Hawaii, 29% were born out of state, 2% were born outside of the United States and 7% were foreign born.