Bartonville, IL has a population of 6,406 and is the 5,521st largest city in the United States. The population density is 782 per sq mi which is 252% higher than the Illinois average and 764% higher than the national average. The median age in Bartonville is 42 which is approximately 12% higher than the Illinois average of 37. In Bartonville, 61% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 86% of Bartonville residents were born in Illinois, 12% were born out of state, 0% were born outside of the United States and 1% were foreign born.