Harlem Heights, FL has a population of 1,291 and is the 13,591st largest city in the United States. The population density is 1,960 per sq mi which is 567% higher than the Florida average and 2063% higher than the national average. The median age in Harlem Heights is 43 which is approximately 2% higher than the Florida average of 42. In Harlem Heights, 43% of the population over 15 years of age are married, 38% speak English and 62% speak Spanish. 40% of Harlem Heights residents were born in Florida, 14% were born out of state, 21% were born outside of the United States and 25% were foreign born.