Sea Ranch Lakes, FL has a population of 663 and is the 17,790th largest city in the United States. The population density is 3,747 per sq mi which is 1176% higher than the Florida average and 4035% higher than the national average. The median age in Sea Ranch Lakes is 48 which is approximately 16% higher than the Florida average of 42. In Sea Ranch Lakes, 72% of the population over 15 years of age are married, 82% speak English and 14% speak Spanish. 38% of Sea Ranch Lakes residents were born in Florida, 51% were born out of state, 2% were born outside of the United States and 10% were foreign born.