Upper Grand Lagoon, FL has a population of 15,771 and is the 2,722nd largest city in the United States. The population density is 1,949 per sq mi which is 564% higher than the Florida average and 2051% higher than the national average. The median age in Upper Grand Lagoon is 39 which is approximately 6% lower than the Florida average of 42. In Upper Grand Lagoon, 56% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 34% of Upper Grand Lagoon residents were born in Florida, 59% were born out of state, 2% were born outside of the United States and 4% were foreign born.