Tennessee Area Code Information

Tennessee Area Codes


Tennessee Area Code Overlays
(615 and 629)


Tennessee is currently using seven area codes. Tennessee does not utilize any area code overlays.

Tennessee originally had one area code, 901, when the numbering system was established in 1947. By 1954 Tennessee experienced sufficient growth in population and telephone use to need an additional area code. To meet this increase in demand area code 901 was split in 1954 to form area code 615. It was forty-one years later before the demand for new numbers in Tennessee required a split of area code 615 to form area code 423. For forty-eight years between 1947 and 1995 two area codes were sufficient to meet the numbering needs in Tennessee. In the span of less than six years between 1995 and 2001 Tennessee put four new area codes into service due.

Changes and History of Tennessee Area Codes:

01/01/1947
Area code 901 was put into service. Area code 901 has been split 2 times. In 1954 area code 901 was split to form area code 615. In 2001 area code 901 was split to form area code 731.

01/01/1954
Area code 615 was put into service. Area code 615 was created from a split of area code 901. In 1995 area code 615 was split to form area code 423. In 1997 area code 615 was split to form area code 931.

09/11/1995
Area code 423 was put into service. Area code 423 was created from a split of area code 615. In 1999 area code 423 was split to form area code 865.

09/15/1997
Area code 931 was put into service. Area code 931 was created from a split of area code 615.

11/01/1999
Area code 865 was put into service. Area code 865 was created from a split of area code 423.

02/12/2001
Area code 731 was put into service. Area code 731 was created from a split of area code 901.

03/28/2015
Area code 629 was put into service as an overlay of area code 615.










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