| Localité | Code postal |
|---|---|
| Barling, Sebastian | 72923 |
| Bonanza, Sebastian | 72916 |
| Central City, Sebastian | 72941 |
| Charleston, Sebastian | 72933 |
| Fort Smith, Sebastian | 72901, 72903, 72904, 72905, 72908, … |
| Greenwood, Sebastian | 72936 |
| Hackett, Sebastian | 72937 |
| Hartford, Sebastian | 72938 |
| Huntington, Sebastian | 72940 |
| Lavaca, Sebastian | 72941 |
| Mansfield, Sebastian | 72944 |
| Midland, Sebastian | 72945 |