Moon Lake, FL has a population of 4,708 and is the 6,729th largest city in the United States. The population density is 860 per sq mi which is 193% higher than the Florida average and 850% higher than the national average. The median age in Moon Lake is 36 which is approximately 14% lower than the Florida average of 42. In Moon Lake, 44% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 46% of Moon Lake residents were born in Florida, 51% were born out of state, 2% were born outside of the United States and 2% were foreign born.