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Alton, Illinois Area Code |
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Alton, IL Area Code is 618 |
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Alton, 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 Alton, when it was established in 1947. Area code 618 covers the southern portion of Illinois and in addition to Alton serves the major cities of Belleville,
Carbondale, Collinsville, East St. Louis, Edwardsville, Granite City and O'Fallon. Alton, 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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