Tennessee Area Codes
8 active area codes · Memphis · Population around 7,251,291
Tennessee has 8 active area codes, serving cities like Memphis, Nashville, and Knoxville. Of those, 4 are overlays covering ground another code already covers, which is why local calls there use all ten digits. The newest, 729, has been in service since September 5, 2025. Each code below links to its cities, carriers, timezone, and coverage map.
Tennessee Area Code Map
What area codes does Tennessee have?
- 423OverlayChattanoogaEastern / Central · 109 cities · 1,421,060
- 615OverlayNashvilleCentral Time (CT) · 70 cities · 1,903,759
- 629OverlayNashvilleCentral Time (CT) · 70 cities · 1,903,759
- 729OverlayChattanoogaEastern / Central · 109 cities · 1,421,060
- 731JacksonCentral Time (CT) · 91 cities · 524,945
- 865KnoxvilleEastern Time (ET) · 47 cities · 1,000,700
- 901MemphisCentral Time (CT) · 25 cities · 1,032,704
- 931ClarksvilleEastern / Central · 90 cities · 1,027,672
More than one of these codes covers 37 of the 95 counties in Tennessee, and one county is covered by 3 of them. Each card counts the people inside that code's own boundary at the 2020 census. Adding all 8 gives 10,235,659, against the 6,910,840 the same census counts in those counties, because 3,324,819 residents fall inside more than one code.
Which cities are the largest in Tennessee?
How many phone prefixes does Tennessee use?
The area codes in Tennessee hold 3,565 assigned prefixes between them, listed under 105 distinct carrier names. A prefix is the three digits after the area code, and NANPA assigns each one to a single carrier. One of the 8 codes here — 729 — is newer than the NANPA extract behind these numbers, so its prefixes are not counted above.
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Frequently Asked Questions
How many area codes does Tennessee have?
Tennessee has 8 active area codes: 423, 615, 629, 729, 731, 865, 901, 931.
What is the main area code for Tennessee?
Of the 8 area codes in Tennessee, 901 is the oldest one still serving Memphis, its largest city. 901 has been in service since 1947.
What are the largest cities in Tennessee?
The largest cities in Tennessee include Memphis, Nashville, Knoxville, Chattanooga, Clarksville.
What is the total population of Tennessee?
Tennessee has an estimated total population of 7,251,291 based on US Census PEP 2024 data.
Do I have to dial ten digits in Tennessee?
In the parts of Tennessee covered by an overlay, yes. 4 of the 8 area codes here cover ground another code already covers, and where two codes share an area, local calls need the area code as well as the seven-digit number.
Why does Tennessee have 8 area codes?
They arrived one at a time rather than all at once: 901 has been in service since 1947. 4 of the 8 are overlays, laid over a code that already covered the same ground instead of splitting its map in two. The most recent is 729, in service since September 5, 2025.
What is the newest area code in Tennessee?
729, in service since September 5, 2025.
Is my county covered by more than one area code in Tennessee?
It may be: more than one area code covers 37 of the 95 counties in Tennessee, and one county there is covered by 3 of them. The table above shows which codes reach each of the largest cities.