Iona, FL has a population of 14,287 and is the 2,944th largest city in the United States. The population density is 2,160 per sq mi which is 636% higher than the Florida average and 2284% higher than the national average. The median age in Iona is 65 which is approximately 57% higher than the Florida average of 42. In Iona, 68% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 11% of Iona residents were born in Florida, 81% were born out of state, 1% were born outside of the United States and 7% were foreign born.