Tennessee area codes

Codes in service in Tennessee

Tennessee has 8 geographic area codes in service: 423, 615, 629, 729, 731, 865, 901, 931. 901 is the oldest, dated 1947, and 729 the newest, dated 5 Sep 2025.1 The time zones across Tennessee's codes are Eastern and Central, Central and Eastern.

Area code	NANPA location	NPA in-service date	In-service overlay peers	Time zone	Local calls within the code
423	TN	11 Sep 1995	729	Eastern and Central	10 digits
615	TN	1954	629	Central	10 digits
629	TN	28 Mar 2015	615	Central	10 digits
729	TN	5 Sep 2025	423	Eastern and Central	10 digits
731	TN	12 Feb 2001	None listed	Central	10 digits
865	TN	1 Nov 1999	None listed	Eastern	10 digits
901	TN	1947	None listed	Central	7 digits
931	TN	15 Sep 1997	None listed	Eastern and Central	7 digits

Scroll the table sideways to see every column. Sources: NANPA (14 October 2026 file).

History and overlays in Tennessee

Before 1960: 901 (1947), 615 (1954)
1990s: 423 (11 Sep 1995), 931 (15 Sep 1997), 865 (1 Nov 1999)
2000s: 731 (12 Feb 2001)
2010s: 629 (28 Mar 2015)
2020s: 729 (5 Sep 2025)

Tennessee's in-service overlay groups are 423/729; 615/629.1

615/629: 615 (1954) was joined by 629 on 28 Mar 2015.
423/729: 423 (1995) was joined by 729 on 5 Sep 2025.

Dialing in Tennessee

Local calls within a single area code in Tennessee differ: 7 digits for 901, 931; 10 digits for 423, 615, 629, 729, 731, 865. In Tennessee, local calls to other area codes differ: 7 digits for 931; 10 digits for 423, 615, 629, 729, 731, 865, 901.1 Seven-digit local dialing is still recorded for 901, 931.

Neighbours of Tennessee

Regions that border Tennessee:

Alabama: 7 codes (205, 251, 256, 334, ...)
Arkansas: 4 codes (327, 479, 501, 870)
Georgia: 10 codes (229, 404, 470, 478, ...)
Kentucky: 5 codes (270, 364, 502, 606, ...)

Rules that apply to every region are on the area-code reference.

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Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

NANPA, NPA Database CSV, file dated 14 October 2026; US geographic codes, location, dates, overlay complexes, dialing plan and time zone. Retrieved 14 Oct 2026
https://reports.nanpa.com/public/npa_report.csv