Biscayne Park, FL has a population of 3,203 and is the 8,477th largest city in the United States. The population density is 5,167 per sq mi which is 1660% higher than the Florida average and 5603% higher than the national average. The median age in Biscayne Park is 39 which is approximately 6% lower than the Florida average of 42. In Biscayne Park, 44% of the population over 15 years of age are married, 33% speak English and 43% speak Spanish. 45% of Biscayne Park residents were born in Florida, 14% were born out of state, 1% were born outside of the United States and 39% were foreign born.