| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| Abbeyard | Victoria | VIC | 3737 |
| Abbotsford | Victoria | VIC | 3067 |
| Abeckett Street, PO Boxes | Victoria | VIC | 8006 |
| Aberfeldie | Victoria | VIC | 3040 |
| Aberfeldy | Victoria | VIC | 3825 |
| Acheron | Victoria | VIC | 3714 |
| Ada | Victoria | VIC | 3833 |
| Adams Estate | Victoria | VIC | 3984 |
| Addington | Victoria | VIC | 3352 |
| Adelaide Lead | Victoria | VIC | 3465 |
| Agnes | Victoria | VIC | 3962 |
| Aire Valley | Victoria | VIC | 3237 |
| Aireys Inlet | Victoria | VIC | 3231 |
| Airly | Victoria | VIC | 3851 |
| Airport West | Victoria | VIC | 3042 |
| Albacutya | Victoria | VIC | 3424 |
| Albanvale | Victoria | VIC | 3021 |
| Albert Park | Victoria | VIC | 3206 |
| Alberton | Victoria | VIC | 3971 |
| Alberton West | Victoria | VIC | 3971 |
