26 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 37421 | Chattanooga | 52,507 |
| 37343 | Hixson | 44,039 |
| 37363 | Ooltewah | 40,195 |
| 37379 | Soddy Daisy | 28,593 |
| 37415 | Chattanooga | 22,928 |
| 37412 | Chattanooga | 21,840 |
| 37411 | Chattanooga | 18,710 |
| 37377 | Signal Mountain | 16,508 |
| 37341 | Harrison | 14,178 |
| 37404 | Chattanooga | 13,848 |
| 37416 | Chattanooga | 13,823 |
| 37406 | Chattanooga | 12,986 |
| 37407 | Chattanooga | 9,827 |
| 37403 | Chattanooga | 6,494 |
| 37302 | Apison | 5,239 |
| 37336 | Georgetown | 4,858 |
| 37402 | Chattanooga | 4,167 |
| 37409 | Chattanooga | 3,494 |
| 37410 | Chattanooga | 3,440 |
| 37373 | Sale Creek | 3,332 |
| 37408 | Chattanooga | 2,727 |
| 37308 | Birchwood | 2,663 |
| 37350 | Lookout Mountain | 2,128 |
| 37315 | Collegedale | 1,765 |
| 37351 | Lupton City | 408 |
| 37450 | Chattanooga | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 26 ZCTAs in Hamilton County, Tennessee (US Census).