Northdale, FL has a population of 22,317 and is the 1,948th largest city in the United States. The population density is 2,759 per sq mi which is 840% higher than the Florida average and 2945% higher than the national average. The median age in Northdale is 40 which is approximately 5% lower than the Florida average of 42. In Northdale, 52% of the population over 15 years of age are married, 75% speak English and 18% speak Spanish. 39% of Northdale residents were born in Florida, 42% were born out of state, 4% were born outside of the United States and 15% were foreign born.