| Locality | Post Code |
|---|---|
| Beaumont, Jefferson | 77701, 77702, 77703, 77705, 77706, … |
| Bevil Oaks, Jefferson | 77713 |
| Cheek, Jefferson | 77705 |
| China, Jefferson | 77613 |
| Fannett, Jefferson | 77705 |
| Griffing, Jefferson | 77640 |
| Griffing Park, Jefferson | 77640 |
| Groves, Jefferson | 77619 |
| Hamshire, Jefferson | 77622 |
| Nederland, Jefferson | 77627 |
| Nome, Jefferson | 77629 |
| Pear Ridge, Jefferson | 77640 |
| Port Acres, Jefferson | 77640 |
| Port Arthur, Jefferson | 77640, 77642 |
| Port Neches, Jefferson | 77651 |
| Sabine, Jefferson | 77640 |
| Sabine Pass, Jefferson | 77655 |
| Steeltown, Jefferson | 77619 |
| Taylor Landing, Jefferson | 77705 |
| West Port Arthur, Jefferson | 77640 |