| Place | Postal Code |
|---|---|
| Aire Valley, Colac-Otway | 3237 |
| Alvie, Colac-Otway | 3249 |
| Apollo Bay, Colac-Otway | 3233 |
| Balintore, Colac-Otway | 3249 |
| Barongarook, Colac-Otway | 3249 |
| Barongarook West, Colac-Otway | 3249 |
| Barramunga, Colac-Otway | 3249 |
| Barunah Plains, Colac-Otway | 3329 |
| Barwon Downs, Colac-Otway | 3243 |
| Beeac, Colac-Otway | 3251 |
| Beech Forest, Colac-Otway | 3237 |
| Birregurra, Colac-Otway | 3242 |
| Bungador, Colac-Otway | 3260 |
| Cape Otway, Colac-Otway | 3233 |
| Carlisle River, Colac-Otway | 3239 |
| Chapple Vale, Colac-Otway | 3239 |
| Colac, Colac-Otway | 3250 |
| Colac East, Colac-Otway | 3250 |
| Colac West, Colac-Otway | 3250 |
| Coragulac, Colac-Otway | 3249 |
| Cororooke, Colac-Otway | 3254 |
| Corunnun, Colac-Otway | 3249 |
| Cressy, Colac-Otway | 3322 |
| Cundare, Colac-Otway | 3251 |
| Cundare North, Colac-Otway | 3251 |
| Dreeite, Colac-Otway | 3249 |
| Postal Codes in Southwest | |
|---|---|
| Colac-Otway, Southwest | |
| Golden Plains, Southwest | |
| Greater Geelong, Southwest | |
| Queenscliffe, Southwest | |
| Surf Coast, Southwest | |