Pearl City, HI has a population of 47,241 and is the 876th largest city in the United States. The population density is 5,185 per sq mi which is 3971% higher than the Hawaii average and 5623% higher than the national average. The median age in Pearl City is 41 which is approximately 6% higher than the Hawaii average of 39. In Pearl City, 62% of the population over 15 years of age are married, 79% speak English and 2% speak Spanish. 67% of Pearl City residents were born in Hawaii, 17% were born out of state, 3% were born outside of the United States and 13% were foreign born.