| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| Corndale | Queensland | QLD | 4610 |
| Cornubia | Queensland | QLD | 4130 |
| Cornwall | Queensland | QLD | 4455 |
| Cosgrove | Queensland | QLD | 4818 |
| Cotswold Hills | Queensland | QLD | 4350 |
| Cotton Tree | Queensland | QLD | 4558 |
| Cottonvale | Queensland | QLD | 4375 |
| Coulson | Queensland | QLD | 4310 |
| Coverty | Queensland | QLD | 4613 |
| Cow Bay | Queensland | QLD | 4873 |
| Cowan Cowan | Queensland | QLD | 4025 |
| Cowley | Queensland | QLD | 4871 |
| Cowley Beach | Queensland | QLD | 4871 |
| Cowley Creek | Queensland | QLD | 4871 |
| Cracow | Queensland | QLD | 4719 |
| Craiglie | Queensland | QLD | 4877 |
| Craignish | Queensland | QLD | 4655 |
| Cranbrook | Queensland | QLD | 4814 |
| Cranley | Queensland | QLD | 4350 |
| Crawford | Queensland | QLD | 4610 |
