Williamson County is over 66,000, making it one of the largest counties in Illinois outside of the metro areas of major population centers. Marion, located in the geographic center of both the county and Southern Illinois, is the county seat and the largest community at over 17,000
Williamson County is located 88 air miles (120 miles by interstate) Southeast of St. Louis, MO at the intersection of Interstate 57,Interstate 24, and Illinois Route 13, a main East-West 4-lane expressway.
Major communities include Benton, Carbondale, Carterville, Herrin, Marion, Murphysboro, Harrisburg, Mt. Vernon, and West Frankfort.
More than 150,000 people make their homes in Williamson and the adjacent counties and over a quarter of a million live within an hour’s drive of the county, making it a retail and commercial hub for the area.
The people of Williamson
County are proud of their area,
their heritage, their families
and their reputation for
being good workers.
REDCO has been a major
player in bringing industry,
investment, and employment
to Williamson County and
Southern Illinois since 1999.