| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| Carlisle River | Victoria | VIC | 3239 |
| Carlsruhe | Victoria | VIC | 3442 |
| Carlton | Victoria | VIC | 3053 |
| Carlton North | Victoria | VIC | 3054 |
| Carlton South | Victoria | VIC | 3053 |
| Carlyle | Victoria | VIC | 3685 |
| Carnegie | Victoria | VIC | 3163 |
| Carngham | Victoria | VIC | 3351 |
| Caroline Springs | Victoria | VIC | 3023 |
| Carpendeit | Victoria | VIC | 3260 |
| Carrajung | Victoria | VIC | 3844 |
| Carrajung Lower | Victoria | VIC | 3844 |
| Carrajung South | Victoria | VIC | 3844 |
| Carranballac | Victoria | VIC | 3361 |
| Carron | Victoria | VIC | 3480 |
| Carrum | Victoria | VIC | 3197 |
| Carrum Downs | Victoria | VIC | 3201 |
| Carwarp | Victoria | VIC | 3494 |
| Cashmore | Victoria | VIC | 3305 |
| Cassilis | Victoria | VIC | 3898 |
