There are 505 Pool & Spa Services in Illinois, serving a population of 12,854,526 people in an area of 55,505 square miles. There is 1 Pool & Spa Service per 25,454 people, and 1 Pool & Spa Service per 109 square miles.
The state of Illinois is ranked 39th in Pool & Spa Services per capita, and 24th in Pool & Spa Services per square mile.