Rotonda, FL has a population of 8,755 and is the 4,355th largest city in the United States. The population density is 822 per sq mi which is 180% higher than the Florida average and 807% higher than the national average. The median age in Rotonda is 66 which is approximately 58% higher than the Florida average of 42. In Rotonda, 76% of the population over 15 years of age are married, 93% speak English and 1% speak Spanish. 11% of Rotonda residents were born in Florida, 79% were born out of state, 1% were born outside of the United States and 9% were foreign born.