Aurora, OH has a population of 15,712 and is the 2,730th largest city in the United States. The population density is 686 per sq mi which is 166% higher than the Ohio average and 657% higher than the national average. The median age in Aurora is 48 which is approximately 23% higher than the Ohio average of 39. In Aurora, 69% of the population over 15 years of age are married, 93% speak English and 1% speak Spanish. 71% of Aurora residents were born in Ohio, 22% were born out of state, 1% were born outside of the United States and 6% were foreign born.