| Locality | Post Code |
|---|---|
| Barrackville, Marion | 26559 |
| Baxter, Marion | 26560 |
| Bellview, Marion | 26554 |
| Carolina, Marion | 26563 |
| Colfax, Marion | 26566 |
| Fairmont, Marion | 26554, 26555 |
| Fairview, Marion | 26570 |
| Farmington, Marion | 26571 |
| Four States, Marion | 26572 |
| Grant Town, Marion | 26574 |
| Idamay, Marion | 26576 |
| Jordan, Marion | 26554 |
| Kingmont, Marion | 26578 |
| Mannington, Marion | 26582 |
| Metz, Marion | 26585 |
| Monongah, Marion | 26554 |
| Montana Mines, Marion | 26586 |
| Pleasant Valley, Marion | 26554 |
| Rachel, Marion | 26587 |
| Rivesville, Marion | 26588 |
| White Hall, Marion | 26554 |
| Worthington, Marion | 26591 |