Milton, FL has a population of 9,462 and is the 4,108th largest city in the United States. The population density is 1,700 per sq mi which is 479% higher than the Florida average and 1776% higher than the national average. The median age in Milton is 34 which is approximately 18% lower than the Florida average of 42. In Milton, 53% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 41% of Milton residents were born in Florida, 53% were born out of state, 3% were born outside of the United States and 3% were foreign born.