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Collinsville, Illinois Area Code |
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Collinsville, IL Area Code is 618 |
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Collinsville, IL is currently using only one area code which is area code 618. Area code 618 was one of the
original area codes assigned to Illinois, including Collinsville, when it was established in 1947. Area code 618 covers the southern portion of Illinois and in addition to Collinsville serves the major
cities of Alton, Belleville, Carbondale, East St. Louis, Edwardsville, Granite City and O'Fallon. Collinsville, IL does not utilize any area code overlays. |
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Illinois Area Codes |
217, 224, 309, 312, 331, 618, 630, 708, 773, 779, 815, 847, 872 |
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