| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| Winnambool | Victoria | VIC | 3546 |
| Winnap | Victoria | VIC | 3304 |
| Winnindoo | Victoria | VIC | 3858 |
| Winslow | Victoria | VIC | 3281 |
| Winter Valley | Victoria | VIC | 3358 |
| Winton | Victoria | VIC | 3673 |
| Winton North | Victoria | VIC | 3673 |
| Wirrate | Victoria | VIC | 3608 |
| Wiseleigh | Victoria | VIC | 3885 |
| Wishart | Victoria | VIC | 3189 |
| Wodonga, PO Boxes | Victoria | VIC | 3689 |
| Wodonga | Victoria | VIC | 3690 |
| Wodonga Plaza | Victoria | VIC | 3690 |
| Wollert | Victoria | VIC | 3750 |
| Wombat Creek | Victoria | VIC | 3888 |
| Wombelano | Victoria | VIC | 3409 |
| Won Wron | Victoria | VIC | 3971 |
| Wonga | Victoria | VIC | 3960 |
| Wonga Park | Victoria | VIC | 3115 |
| Wongarra | Victoria | VIC | 3234 |
