729 Area Code
Area code 729 serves Chattanooga, Johnson City, Kingsport, Cleveland, Morristown and nearby communities in Tennessee. It has been in service since September 5, 2025, when it was split from 423.
StateTennessee
Time zonesEastern / Central
Local time now…
Prefixes in use0
Overlay with423
Projected to run out2081
Cities and towns in area code 729
| City | Population | Other area codes |
|---|---|---|
| Chattanooga | 194,144 | 423 |
| Johnson City | 74,943 | 423 |
| Kingsport | 57,530 | 423 |
| Cleveland | 51,172 | 423 |
| Morristown | 33,517 | 423 |
| Bristol | 28,107 | 423 |
| Greeneville | 16,141 | 423 |
| Athens | 15,263 | 423 |
| Elizabethton | 14,350 | 423 |
| Soddy-Daisy | 13,474 | 423 |
| Collegedale | 11,499 | 423 |
| Dayton | 7,819 | 423 |
| Church Hill | 7,297 | 423 |
| La Follette | 7,176 | 423 |
| Newport | 7,049 | 423 |
| Jonesborough | 6,990 | 423 |
| Sweetwater | 6,706 | 423 |
| Dunlap | 6,089 | 423 |
| Erwin | 6,019 | 423 |
| Madisonville | 5,428 | 423 |
Got a call from 729?
A 729 number was originally issued in Tennessee, but that does not prove the caller is there. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.
Questions about area code 729
- Where is area code 729?
- Area code 729 is in Tennessee. It covers Chattanooga, Johnson City, Kingsport, Cleveland, Morristown, Bristol and 14 more cities and towns.
- What time zone is area code 729?
- Area code 729 spans two time zones: Eastern and Central. Check the caller's city before you call back.
- Is 729 a toll-free number?
- No. 729 is a geographic area code in Tennessee. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
- Why does 729 share its area with 423?
- 423 and 729 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
- Will area code 729 run out of numbers?
- NANPA's latest forecast projects the 423/729 overlay to exhaust in the first quarter of 2081. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.