Lake Harbor, FL has a population of 20 and is the 28,784th largest city in the United States. The population density is 15 per sq mi which is 95% lower than the Florida average and 83% lower than the national average. The median age in Lake Harbor is 33 which is approximately 21% lower than the Florida average of 42. In Lake Harbor, 67% of the population over 15 years of age are married, 75% speak English and 0% speak Spanish. 50% of Lake Harbor residents were born in Florida, 25% were born out of state, 0% were born outside of the United States and 25% were foreign born.