| Place | Post Code |
|---|---|
| Boorabbin, Coolgardie | 6429 |
| Bullabulling, Coolgardie | 6429 |
| Coolgardie, Coolgardie | 6429 |
| Higginsville, Coolgardie | 6443 |
| Kambalda East, Coolgardie | 6442 |
| Kambalda West, Coolgardie | 6442 |
| Karramindie, Coolgardie | 6429 |
| Londonderry, Coolgardie | 6429 |
| Mount Burges, Coolgardie | 6429 |
| Victoria Rock, Coolgardie | 6429 |
| Wallaroo, Coolgardie | 6429 |
| Widgiemooltha, Coolgardie | 6443 |