There are 302 General Contractors in St. Clair County, Illinois, serving a population of 264,433 people in an area of 658 square miles. There is 1 General Contractor per 875 people, and 1 General Contractor per 2 square miles.
In Illinois, St. Clair County is ranked 32nd of 102 counties in General Contractors per capita, and 10th of 102 counties in General Contractors per square mile.