Abingdon, IL has a population of 3,181 and is the 8,513th largest city in the United States. The population density is 2,231 per sq mi which is 904% higher than the Illinois average and 2363% higher than the national average. The median age in Abingdon is 40 which is approximately 7% higher than the Illinois average of 37. In Abingdon, 48% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 84% of Abingdon residents were born in Illinois, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.