| Zip Code | City | Population ↓ |
|---|---|---|
| 37405 | Chattanooga | 18,456 |
| 37397 | Whitwell | 10,180 |
| 37347 | Jasper | 8,452 |
| 37380 | South Pittsburg | 6,270 |
| 37419 | Chattanooga | 6,092 |
| 37356 | Monteagle | 2,403 |
| 37374 | Sequatchie | 1,971 |
| 37340 | Guild | 207 |
| 37396 | Whiteside | 192 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Marion County, Tennessee (US Census).