Florida City, FL has a population of 12,076 and is the 3,401st largest city in the United States. The population density is 2,019 per sq mi which is 588% higher than the Florida average and 2128% higher than the national average. The median age in Florida City is 26 which is approximately 37% lower than the Florida average of 42. In Florida City, 33% of the population over 15 years of age are married, 45% speak English and 40% speak Spanish. 51% of Florida City residents were born in Florida, 14% were born out of state, 3% were born outside of the United States and 32% were foreign born.