Forest City, FL has a population of 15,123 and is the 2,815th largest city in the United States. The population density is 3,535 per sq mi which is 1104% higher than the Florida average and 3802% higher than the national average. The median age in Forest City is 41 which is approximately 2% lower than the Florida average of 42. In Forest City, 53% of the population over 15 years of age are married, 71% speak English and 22% speak Spanish. 35% of Forest City residents were born in Florida, 37% were born out of state, 10% were born outside of the United States and 17% were foreign born.