| Place | Post Code |
|---|---|
| Trafalgar, Kalgoorlie-Boulder | 6431 |
| Victory Heights, Kalgoorlie-Boulder | 6432 |
| West Kalgoorlie, Kalgoorlie-Boulder | 6430 |
| West Lamington, Kalgoorlie-Boulder | 6430 |
| Williamstown, Kalgoorlie-Boulder | 6430 |
| Yilkari, Kalgoorlie-Boulder | 6430 |
| Zanthus, Kalgoorlie-Boulder | 6434 |