| Locality | Post Code |
|---|---|
| Hart, Oceana | 49420 |
| Hesperia, Oceana | 49421 |
| Holton, Oceana | 49425 |
| Mears, Oceana | 49436 |
| Montague, Oceana | 49437 |
| New Era, Oceana | 49446 |
| Pentwater, Oceana | 49449 |
| Rothbury, Oceana | 49452 |
| Shelby, Oceana | 49455 |
| Silver Lake, Oceana | 49436 |
| Walkerville, Oceana | 49459 |