Auburndale, FL has a population of 14,638 and is the 2,891st largest city in the United States. The population density is 1,085 per sq mi which is 270% higher than the Florida average and 1098% higher than the national average. The median age in Auburndale is 37 which is approximately 11% lower than the Florida average of 42. In Auburndale, 54% of the population over 15 years of age are married, 79% speak English and 15% speak Spanish. 48% of Auburndale residents were born in Florida, 38% were born out of state, 4% were born outside of the United States and 10% were foreign born.