| Place | Post Code |
|---|---|
| Baldivis, Rockingham | 6171 |
| Cooloongup, Rockingham | 6168 |
| East Rockingham, Rockingham | 6168 |
| Garden Island, Rockingham | 6168 |
| Golden Bay, Rockingham | 6174 |
| Hillman, Rockingham | 6168 |
| Karnup, Rockingham | 6176 |
| Keralup, Rockingham | 6182 |
| Peron, Rockingham | 6168 |
| Port Kennedy, Rockingham | 6172 |
| Rockingham, Rockingham | 6168 |
| Rockingham Beach, Rockingham | 6168 |
| Safety Bay, Rockingham | 6169 |
| Secret Harbour, Rockingham | 6173 |
| Shoalwater, Rockingham | 6169 |
| Singleton, Rockingham | 6175 |
| Waikiki, Rockingham | 6169 |
| Warnbro, Rockingham | 6169 |