8 area codes assigned to Tennessee · Central Time
2 of Tennessee's area codes share territory with another. Codes in the same row serve the same places, so either can reach a number there — and ten-digit dialling is required throughout.
The remaining 4 codes cover their own area: 731, 865, 901, 931.
Tennessee went from one area code in 1947 to 8 today. A split carves territory off its parent; an overlay sits on top of it, which is why newer codes need ten-digit dialling.
Dates from the NANPA area code report, 09/19/2026.
Tennessee spans 9 LATAs — the regions a call is routed within before it becomes long-haul.
423
Tennessee
Eastern Time
Overlay · with 729
5,860 blocks · 75 rate centres
615
Tennessee
Central Time
Overlay · with 629
5,758 blocks · 62 rate centres
629
Tennessee
Central Time
Overlay · with 615
1,908 blocks · 44 rate centres
729
Tennessee
Central Time
Overlay · Sep 5, 2025 · with 423
0 blocks · 0 rate centres
731
Tennessee
Central Time
2,652 blocks · 71 rate centres
865
Tennessee
Eastern Time
4,076 blocks · 33 rate centres
901
Tennessee
Central Time
4,457 blocks · 15 rate centres
931
Tennessee
Central Time
3,686 blocks · 102 rate centres
Tennessee has more than one area code in most regions. Enter a city to see which codes serve it, or check a specific number instead.
Tennessee spans 2 time zones: Central, Eastern. The zone depends on the area code, not the state.
Tennessee has had 4 area codes activated as an overlay since 2021, sharing territory with an existing code rather than carving out new geography. Local calls in an overlaid region must be dialed with all ten digits. Earlier overlays are not listed here.
Tennessee is served by 8 area codes in the North American Numbering Plan (NANP): 423, 615, 629, 729, 731, 865, 901, 931. All Tennessee numbers are in the Central Time zone. Click any area code above to see the cities and rate centers it covers, formatted tel: link examples, and to search for available phone numbers.