| Place | Postal Code |
|---|---|
| Bailup, Mundaring | 6082 |
| Beechina, Mundaring | 6556 |
| Boya, Mundaring | 6056 |
| Chidlow, Mundaring | 6556 |
| Darlington, Mundaring | 6070 |
| Glen Forrest, Mundaring | 6071 |
| Gorrie, Mundaring | 6556 |
| Greenmount, Mundaring | 6056 |
| Helena Valley, Mundaring | 6056 |
| Hovea, Mundaring | 6071 |
| Mahogany Creek, Mundaring | 6072 |
| Malmalling, Mundaring | 6556 |
| Mount Helena, Mundaring | 6082 |
| Mundaring, Mundaring | 6073 |
| Parkerville, Mundaring | 6081 |
| Sawyers Valley, Mundaring | 6074 |
| Stoneville, Mundaring | 6081 |
| Swan View, Mundaring | 6056 |
| The Lakes, Mundaring | 6556 |
| Wooroloo, Mundaring | 6558 |