| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| O’Bil Bil | Queensland | QLD | 4626 |
| O’Briens Hill | Queensland | QLD | 4860 |
| O’Connell | Queensland | QLD | 4680 |
| O’Reilly | Queensland | QLD | 4275 |
| Oak Beach | Queensland | QLD | 4877 |
| Oak Valley | Queensland | QLD | 4811 |
| Oakdale | Queensland | QLD | 4605 |
| Oakenden | Queensland | QLD | 4741 |
| Oakey | Queensland | QLD | 4401 |
| Oakey Creek | Queensland | QLD | 4714 |
| Oakhurst | Queensland | QLD | 4650 |
| Oakview | Queensland | QLD | 4600 |
| Oakwood | Queensland | QLD | 4670 |
| Oaky Creek | Queensland | QLD | 4285 |
| Oberina | Queensland | QLD | 4417 |
| Obi Obi | Queensland | QLD | 4574 |
| Obum Obum | Queensland | QLD | 4309 |
| Ocean View | Queensland | QLD | 4521 |
| Ogmore | Queensland | QLD | 4706 |
| Okeden | Queensland | QLD | 4613 |
