Orange Park, FL has a population of 8,603 and is the 4,417th largest city in the United States. The population density is 2,374 per sq mi which is 709% higher than the Florida average and 2521% higher than the national average. The median age in Orange Park is 43 which is approximately 4% higher than the Florida average of 42. In Orange Park, 53% of the population over 15 years of age are married, 90% speak English and 5% speak Spanish. 41% of Orange Park residents were born in Florida, 51% were born out of state, 2% were born outside of the United States and 6% were foreign born.