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Area code 478 is a telephone area code serving parts of the state of Georgia, in the United States. It covers Macon and central Georgia (Warner Robins, Swainsboro, Wadley, Milledgeville, Hawkinsville, Eastman, Cochran, Dublin, Perry). It was formerly part of area code 912. The new area code, along with area code 229 (for Southwestern Georgia), began effective August 1, 2000, and ran through August 1, 2001 .
Counties served
Baldwin, Bibb, Bleckley, Burke,(part with area codes 706 and 762), Crawford, Dodge (part with area code 229), Dooly (part with area code 229), Emanuel (part with area code 912), Houston, Jefferson (part with area codes 706 and 762), Jenkins, Johnson, Jones, Laurens, Macon, Monroe, Peach, Pulaski (part with area code 229), Taylor, Twiggs, Upson (part with area codes 706 and 762), Washington, and Wilkinson.