Harbor Isle, NY has a population of 1,206 and is the 13,996th largest city in the United States. The population density is 6,915 per sq mi which is 1828% higher than the New York average and 7533% higher than the national average. The median age in Harbor Isle is 45 which is approximately 19% higher than the New York average of 38. In Harbor Isle, 73% of the population over 15 years of age are married, 88% speak English and 10% speak Spanish. 84% of Harbor Isle residents were born in New York, 8% were born out of state, 0% were born outside of the United States and 8% were foreign born.