Leilani Estates, HI has a population of 1,629 and is the 12,225th largest city in the United States. The population density is 404 per sq mi which is 217% higher than the Hawaii average and 346% higher than the national average. The median age in Leilani Estates is 55 which is approximately 42% higher than the Hawaii average of 39. In Leilani Estates, 50% of the population over 15 years of age are married, 94% speak English and 1% speak Spanish. 26% of Leilani Estates residents were born in Hawaii, 67% were born out of state, 2% were born outside of the United States and 5% were foreign born.