Auburn, AL has a population of 60,318 and is the 640th largest city in the United States. The population density is 1,025 per sq mi which is 1014% higher than the Alabama average and 1032% higher than the national average. The median age in Auburn is 24 which is approximately 38% lower than the Alabama average of 39. In Auburn, 37% of the population over 15 years of age are married, 87% speak English and 4% speak Spanish. 52% of Auburn residents were born in Alabama, 38% were born out of state, 1% were born outside of the United States and 9% were foreign born.