Ashton, IL has a population of 1,008 and is the 15,099th largest city in the United States. The population density is 1,538 per sq mi which is 592% higher than the Illinois average and 1597% higher than the national average. The median age in Ashton is 45 which is approximately 21% higher than the Illinois average of 37. In Ashton, 56% of the population over 15 years of age are married, 96% speak English and 0% speak Spanish. 75% of Ashton residents were born in Illinois, 19% were born out of state, 1% were born outside of the United States and 4% were foreign born.