| Code | Name | Region |
|---|---|---|
| AUYKB | Yorkeys Knob | QLD |
| AUNGA | Young | NSW |
| AUYOU | Youngtown | TAS |
| AU3WS | Yowie Bay | NSW |
| AUYUE | Yuendumu | NT |
| AUYUL | Yulara | NT |
| AUZLD | Zetland | NSW |
| AUYDA | Yenda | NSW |
| AUZLM | Zillmere | QLD |
| AUYNA | Yennora | NSW |
| AUYEL | Yeppoon | QLD |
| AUYRG | Yering | VIC |
| AUYKN | Yokine | WA |
| AUYLL | Yolla | TAS |
| AUYOR | York | WA |
| AUOKR | Yorke Island | QLD |
| AUORR | Yorketown | SA |
| AUYAW | Yarwun | QLD |
| AUYSS | Yass | NSW |
| AUYTL | Yatala | QLD |
| AUYNC | Yanco | NSW |
| AUYEA | Yea | VIC |
| AUYNN | Yandicoogina / Yandi Apt | WA |
| AUKYF | Yeelirrie | WA |
| AUYDN | Yandina | QLD |
| AUYEE | Yeerongpilly | QLD |
| AUYGB | Yangebup | WA |
| AUYEB | Yellingbo | VIC |
| AUKYB | Yangoonabie | SA |
| AUYLO | Yarloop | WA |
| AUYAR | Yarra Glen | VIC |
| AUYRR | Yarra Junction | VIC |
| AUVUK | Yarragon | VIC |
| AUYRL | Yarralumla | ACT |
| AUYRV | Yarraville/melbourne | VIC |
| AU2SN | Yarrawarrah | NSW |
| AUYWO | Yarrawonga | NSW |
| AUWKM | Wyalkatchem | WA |
| AUYMB | Yambuk | VIC |
| AUWYL | Wyalong | NSW |
| AUYAM | Yampi | WA |
| AUWBG | Wybong | NSW |
| AU5TO | Yan Yean | VIC |
| AUWYE | Wyee | NSW |
| AUWYD | Wyndham | NSW |
| AUWYN | Wyndham | WA |
| AUWWS | Wynnum West | QLD |
| AUWNY | Wynyard | TAS |
| AUWYO | Wyong | NSW |
| AUYBU | Yabulu | QLD |