Aventura, FL has a population of 37,515 and is the 1,110th largest city in the United States. The population density is 14,156 per sq mi which is 4722% higher than the Florida average and 15525% higher than the national average. The median age in Aventura is 49 which is approximately 19% higher than the Florida average of 42. In Aventura, 61% of the population over 15 years of age are married, 41% speak English and 37% speak Spanish. 17% of Aventura residents were born in Florida, 34% were born out of state, 3% were born outside of the United States and 47% were foreign born.