Chattanooga, TN Area Codes
Chattanooga is served by area code 423. It is in Tennessee, Hamilton County. About 214,646 people live in its 20 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 423 |
| State / province | Tennessee |
| County | Hamilton County |
| Population | 214,646 |
| ZIP codes | 20 |
| Time zone | Eastern |
| Coordinates | 35.0465, -85.2893 |
What area code is Chattanooga in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 423 | Tennessee | 1,424,610 | — |
ZIP codes in the code footprint
37401, 37402, 37403, 37404, 37405, 37406, 37407, 37408, 37409, 37410, 37411, 37412, 37414, 37415, 37416, 37419, 37421, 37422, 37424, 37450
Nearby towns and their area codes
Hixson 423Signal Mountain 423Ooltewah 423Soddy Daisy 423Whitwell 423Harrison 423Jasper 423Cleveland 423
How to dial
Dial 423 + 7 digits for a number in Chattanooga, or +1 423 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.