There are 673 Addiction Treatment Centers in Illinois, serving a population of 12,854,526 people in an area of 55,505 square miles. There is 1 Addiction Treatment Center per 19,100 people, and 1 Addiction Treatment Center per 82 square miles.
The state of Illinois is ranked 44th in Addiction Treatment Centers per capita, and 19th in Addiction Treatment Centers per square mile.