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Map of all Tennessee area codes. 423 - Chattanooga, Johnson City, Kingsport, Bristol: Initially split from 615 in 1995. 615 and 629 (overlay) - Greater Nashville, including Murfreesboro, Mount Juliet: 615 initially split from 901 in a 1954 flash-cut. The 629 overlay for the entire area code was made effective in 2015
Area code 731 was created in September 2001 in a split from area code 901, which was the original area code created for the entire state in 1947. NPA 901 has since been restricted for use in the greater Memphis metropolitan area only. Prior to October 2021, area code 731 had telephone numbers assigned for the central office code 988.
List of Tennessee area codes; 0–9. Area code 423; Area codes 615 and 629; Area code 731; Area code 865; Area code 901; Area code 931
Area code 901 (dark blue) post 2001. Area code 901 is a telephone area code in the North American Numbering Plan (NANP) for Memphis, Tennessee, and most of its inner-ring suburbs. It is the smallest numbering plan area in the state.
When planning of the area code system concluded in 1947, area code 901 was assigned as the sole area code for Tennessee. In 1954, the numbering plan area was restricted to West Tennessee, while everything east of the Tennessee River received the new area code 615. This division remained in place for 41 years, until area code 423 was created as ...
In 1954, 901 was reduced to West Tennessee, while the rest of the state received area code 615. In 1995, the eastern portion of 615, including Knoxville, Chattanooga, and the Tri-Cities, was split off with area code 423. This was the first new area code in the state in 41 years.
The 931 area code was created in 1997 from area code 615, which had previously covered almost all of Middle Tennessee, but afterwards was restricted to the inner ring of Nashville. Area code 931 began operation on September 15, 1997. Permissive dialing of 615 continued across Middle Tennessee until January 15, 1998.
Area codes 870 and 327 are telephone area codes in the North American Numbering Plan (NANP) for southern, eastern, and most of northern Arkansas. 870 was created on April 14, 1997, in a split from area code 501, Arkansas's original area code of 1947, and 327 was added as part of an overlay complex in 2024.