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Area codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois. Area Code 618 is located in Illinois. It covers 246 cities, including Belleville, Granite City, Edwardsville, Alton, and Collinsville. It also covers 39 counties, including Madison. 1170 rowsFind 618 area code details including city, time zone, and map. Lookup area code 618 phone number, name, and location.
Area code 618 - Illinois. Reverse phone lookup, search by area code or region. Local time and map of Illinois. 618 area code is a telephone area code in the North American Numbering Plan (NANP) for all parts of the 39 counties in southern Illinois, United States. The area code was one of the.
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