Illinois has a population of 12,821,497. In the year 2020, there were 1,811,581 firearms sold in Illinois. That's one firearm sold for every 7.1 people in the state. Illinois ranks in the #4 position in terms of per capita gun sales, and in the #1 position in absolute firearm sales for the most recent year. For every McDonald’s restaurant in Illinois there are 2.19 gun dealers.