Area codes in Chattanooga, Tennessee
Chattanooga, Tennessee uses area code 423. The main Chattanooga area code is 423.
Area codes serving Chattanooga
All Tennessee area codes · Is a Chattanooga call a scam?
Nearby cities
- Dalton area codes
- Huntsville area codes
- Murfreesboro area codes
- Cookeville area codes
- Kennesaw area codes
- Alpharetta area codes
- Roswell area codes
- Marietta area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.