| Code | Name | Region |
|---|---|---|
| AUAUA | Armadale | WA |
| AUARM | Armidale | NSW |
| AUARC | Arncliffe | NSW |
| AUDLP | Arndell Park | NSW |
| AUAAB | Arrabury | QLD |
| AUART | Artarmon | NSW |
| AUT6C | Arthurs Creek | VIC |
| AUAMN | Arumbera | NT |
| AUARL | Arundel | QLD |
| AUACO | Ascot | WA |
| AUASB | Ashburton | WA |
| AUFFH | Ashfield | NSW |
| AUASF | Ashfield | WA |
| AUASC | Ashgrove/brisbane | QLD |
| AUSOT | Ashmont | NSW |
| AUASH | Ashton | SA |
| AUAWD | Ashwood | VIC |
| AUADO | Andamooka | SA |
| AUAND | Andrews | QLD |
| AUZCB | Angas Plains | SA |
| AUANG | Angaston | SA |
| AUAVE | Angle Vale | SA |
| AUASE | Anglesea | VIC |
| AUANZ | Angus Downs | NT |
| AUANN | Annandale | NSW |
| AUANL | Annerley | QLD |
| AUAYL | Anthony Lagoon | NT |
| AUAPP | Applecross | WA |
| AUAXC | Aramac | QLD |
| AUAHS | Arana Hills | QLD |
| AUARY | Ararat | VIC |
| AUR5T | Arawata | VIC |
| AUACD | Arcadia | NSW |
| AUAFL | Archerfield | QLD |
| AUATA | Ardlethan | NSW |
| AUAHK | Ardross | WA |
| AUARD | Ardrossan | SA |
| AUALX | Alexandria | NSW |
| AUAXL | Alexandria | NT |
| AUASP | Alice Springs | NT |
| AUALB | Allambie Heights | NSW |
| AUAFD | Allansford | VIC |
| AUABH | Alpha | QLD |
| AUAPT | Alphington | VIC |
| AUALN | Alpine | NSW |
| AUAYD | Alroy Downs | NT |
| AUAVI | Alstonville | NSW |
| AUAWN | Alton Downs | SA |
| AUALT | Altona | VIC |
| AUATO | Altona North | VIC |