26 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 37421 | Chattanooga | 52,516 |
| 37343 | Hixson | 44,572 |
| 37363 | Ooltewah | 40,830 |
| 37379 | Soddy Daisy | 29,002 |
| 37415 | Chattanooga | 23,132 |
| 37412 | Chattanooga | 21,840 |
| 37411 | Chattanooga | 18,815 |
| 37377 | Signal Mountain | 16,819 |
| 37341 | Harrison | 14,966 |
| 37416 | Chattanooga | 14,089 |
| 37404 | Chattanooga | 13,883 |
| 37406 | Chattanooga | 12,867 |
| 37407 | Chattanooga | 10,164 |
| 37403 | Chattanooga | 6,560 |
| 37302 | Apison | 5,253 |
| 37336 | Georgetown | 4,908 |
| 37402 | Chattanooga | 4,203 |
| 37410 | Chattanooga | 3,673 |
| 37409 | Chattanooga | 3,417 |
| 37408 | Chattanooga | 3,029 |
| 37308 | Birchwood | 2,957 |
| 37373 | Sale Creek | 2,949 |
| 37350 | Lookout Mountain | 2,112 |
| 37315 | Collegedale | 1,740 |
| 37351 | Lupton City | 295 |
| 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).