Harlem, FL has a population of 2,231 and is the 10,423rd largest city in the United States. The population density is 2,100 per sq mi which is 615% higher than the Florida average and 2218% higher than the national average. The median age in Harlem is 35 which is approximately 15% lower than the Florida average of 42. In Harlem, 40% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 70% of Harlem residents were born in Florida, 20% were born out of state, 0% were born outside of the United States and 11% were foreign born.