Harbour Heights, FL has a population of 3,103 and is the 8,635th largest city in the United States. The population density is 1,431 per sq mi which is 387% higher than the Florida average and 1479% higher than the national average. The median age in Harbour Heights is 51 which is approximately 22% higher than the Florida average of 42. In Harbour Heights, 65% of the population over 15 years of age are married, 88% speak English and 9% speak Spanish. 22% of Harbour Heights residents were born in Florida, 67% were born out of state, 4% were born outside of the United States and 7% were foreign born.