North Aurora, IL has a population of 17,612 and is the 2,457th largest city in the United States. The population density is 2,429 per sq mi which is 993% higher than the Illinois average and 2581% higher than the national average. The median age in North Aurora is 37 which is approximately equal to the Illinois average of 37. In North Aurora, 63% of the population over 15 years of age are married, 82% speak English and 11% speak Spanish. 71% of North Aurora residents were born in Illinois, 17% were born out of state, 1% were born outside of the United States and 11% were foreign born.