Green Cove Springs, FL has a population of 7,205 and is the 5,077th largest city in the United States. The population density is 946 per sq mi which is 222% higher than the Florida average and 944% higher than the national average. The median age in Green Cove Springs is 40 which is approximately 3% lower than the Florida average of 42. In Green Cove Springs, 58% of the population over 15 years of age are married, 93% speak English and 6% speak Spanish. 47% of Green Cove Springs residents were born in Florida, 45% were born out of state, 1% were born outside of the United States and 6% were foreign born.