Atkinson, IL has a population of 1,035 and is the 14,935th largest city in the United States. The population density is 657 per sq mi which is 195% higher than the Illinois average and 625% higher than the national average. The median age in Atkinson is 43 which is approximately 16% higher than the Illinois average of 37. In Atkinson, 65% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 82% of Atkinson residents were born in Illinois, 18% were born out of state, 0% were born outside of the United States and 1% were foreign born.