Area Code 730

Area Code 730 History:

07/07/2023

Area code 730 was put into service as an all services overlay of area code 618. Area code 730 will only become available to subscribers when all assignable central office codes in area code 618 are assigned. Ten digit dialing (area code + seven digit number) is necessary in the 730/618 overlay because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.

Counties in Illinois within area code 730 will include:

Alexander County, Bond County, Calhoun County, Clay County, Clinton County, Crawford County, Edwards County, Effingham County, Fayette County, Franklin County, Gallatin County, Greene County, Hamilton County, Hardin County, Jackson County, Jasper County, Jefferson County, Jersey County, Johnson County, Lawrence County, Macoupin County, Madison County, Marion County, Massac County, Monroe County, Perry County, Pope County, Pulaski County, Randolph County, Richland County, Saint Clair County, Saline County, Shelby County, Union County, Wabash County, Washington County, Wayne County, White County, and Williamson County.

Major cities or places in Illinois within area code 730 include:

Area code 730 service area includes a large area of southern Illinois including the larger cities and communities of Belleville, Carbondale, Collinsville, East St. Louis, Edwardsville, Granite City and O'Fallon in addition to many smaller communities.