| Locality | Post Code |
|---|---|
| Baxterville, Lamar | 39455 |
| Carnes, Lamar | 39455 |
| Higgins, Lamar | 39482 |
| Lumberton, Lamar | 39455 |
| Melba, Lamar | 39482 |
| Oloh, Lamar | 39482 |
| Pine Ridge, Lamar | 39475 |
| Pistol Ridge, Lamar | 39455 |
| Purvis, Lamar | 39475 |
| Rock Hill, Lamar | 39475 |
| Seneca, Lamar | 39455 |
| Sumrall, Lamar | 39482 |
| Talowah, Lamar | 39455 |
| Villa Ridge, Lamar | 39455 |
| Wells Town, Lamar | 39455 |