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