Atwood, IL has a population of 1,106 and is the 14,528th largest city in the United States. The population density is 1,768 per sq mi which is 695% higher than the Illinois average and 1852% higher than the national average. The median age in Atwood is 41 which is approximately 10% higher than the Illinois average of 37. In Atwood, 70% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 78% of Atwood residents were born in Illinois, 19% were born out of state, 1% were born outside of the United States and 2% were foreign born.