Miramar Beach, FL has a population of 7,389 and is the 4,988th largest city in the United States. The population density is 1,052 per sq mi which is 258% higher than the Florida average and 1062% higher than the national average. The median age in Miramar Beach is 57 which is approximately 36% higher than the Florida average of 42. In Miramar Beach, 69% of the population over 15 years of age are married, 95% speak English and 0% speak Spanish. 16% of Miramar Beach residents were born in Florida, 76% were born out of state, 2% were born outside of the United States and 6% were foreign born.