North Miami Beach, FL has a population of 43,722 and is the 939th largest city in the United States. The population density is 9,056 per sq mi which is 2985% higher than the Florida average and 9896% higher than the national average. The median age in North Miami Beach is 38 which is approximately 9% lower than the Florida average of 42. In North Miami Beach, 42% of the population over 15 years of age are married, 32% speak English and 36% speak Spanish. 32% of North Miami Beach residents were born in Florida, 15% were born out of state, 4% were born outside of the United States and 50% were foreign born.