Flagler Estates, FL has a population of 2,739 and is the 9,246th largest city in the United States. The population density is 231 per sq mi which is 34% lower than the Florida average and 155% higher than the national average. The median age in Flagler Estates is 39 which is approximately 4% lower than the Florida average of 41. In Flagler Estates, 57% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 44% of Flagler Estates residents were born in Florida, 50% were born out of state, 3% were born outside of the United States and 2% were foreign born.