26 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 37421 | Chattanooga | 52,985 |
| 37343 | Hixson | 45,101 |
| 37363 | Ooltewah | 42,093 |
| 37379 | Soddy Daisy | 29,430 |
| 37415 | Chattanooga | 24,181 |
| 37412 | Chattanooga | 21,864 |
| 37411 | Chattanooga | 18,997 |
| 37377 | Signal Mountain | 17,188 |
| 37341 | Harrison | 15,591 |
| 37404 | Chattanooga | 14,737 |
| 37416 | Chattanooga | 13,919 |
| 37406 | Chattanooga | 13,364 |
| 37407 | Chattanooga | 9,156 |
| 37403 | Chattanooga | 6,413 |
| 37302 | Apison | 5,082 |
| 37336 | Georgetown | 4,483 |
| 37410 | Chattanooga | 4,129 |
| 37402 | Chattanooga | 3,953 |
| 37408 | Chattanooga | 3,502 |
| 37409 | Chattanooga | 3,357 |
| 37373 | Sale Creek | 3,273 |
| 37308 | Birchwood | 3,188 |
| 37350 | Lookout Mountain | 2,111 |
| 37315 | Collegedale | 1,825 |
| 37351 | Lupton City | 281 |
| 37450 | Chattanooga | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 26 ZCTAs in Hamilton County, Tennessee (US Census).