| Code | Name | Region |
|---|---|---|
| AUCVP | Connells Point | NSW |
| AUCO2 | Connewarre | VIC |
| AUCPD | Coober Pedy | SA |
| AUCEI | Coode Island | VIC |
| AUCEE | Cooee | TAS |
| AUCXE | Coogee | NSW |
| AUCDA | Cooinda | NT |
| AUCTN | Cooktown | QLD |
| AUCLB | Coolabah | NSW |
| AUCLH | Coolah | NSW |
| AUCZY | Cluny | QLD |
| AUCYD | Clyde | NSW |
| AUS2A | Clyde | VIC |
| AUCAZ | Cobar | NSW |
| AUOBR | Cobram | VIC |
| AUCBG | Coburg | VIC |
| AUCTI | Cockatoo Island | WA |
| AUCNC | Coconut Island | QLD |
| AUDGQ | Codrington | VIC |
| AUCUQ | Coen | QLD |
| AUCFS | Coffs Harbour | NSW |
| AUGIR | Coghills Creek | VIC |
| AUXCO | Colac | VIC |
| AUCON | Colbinabbin | VIC |
| AUCST | Coldstream | VIC |
| AUIGA | Colignan | VIC |
| AUCLL | Collan Islands | WA |
| AUCRB | Collarenebri | NSW |
| AUOYL | Collaroy | NSW |
| AULTE | Collector | NSW |
| AUCPH | Clapham | SA |
| AUSCL | Clare | SA |
| AUCLM | Claremont | WA |
| AUCLR | Clarence River | NSW |
| AUCDN | Clarendon | SA |
| AUV5V | Clareville | NSW |
| AUSNN | Clarkson | WA |
| AUCAY | Clayton | QLD |
| AUCLY | Clayton/melbourne | VIC |
| AUCMQ | Clermont | QLD |
| AUCVC | Cleve | SA |
| AUCVN | Cleveland | QLD |
| AUCFT | Clifton | QLD |
| AUCFH | Clifton Hills | SA |
| AUCNJ | Cloncurry | QLD |
| AUCTF | Clontarf | NSW |
| AUCLO | Clontarf | QLD |
| AUCVL | Clovelly | NSW |
| AUCLP | Clovelly Park | SA |
| AUCLU | Clunes | NSW |