Hialeah, FL has a population of 235,626 and is the 89th largest city in the United States. The population density is 10,972 per sq mi which is 3637% higher than the Florida average and 12010% higher than the national average. The median age in Hialeah is 44 which is approximately 5% higher than the Florida average of 42. In Hialeah, 50% of the population over 15 years of age are married, 6% speak English and 93% speak Spanish. 20% of Hialeah residents were born in Florida, 4% were born out of state, 2% were born outside of the United States and 74% were foreign born.