| Location | States or Territories | Abbreviation | Postcode |
|---|---|---|---|
| Mansfield | Victoria | VIC | 3722 |
| Mansfield, PO Boxes | Victoria | VIC | 3724 |
| Maramingo Creek | Victoria | VIC | 3891 |
| Marcus Hill | Victoria | VIC | 3222 |
| Mardan | Victoria | VIC | 3953 |
| Marengo | Victoria | VIC | 3233 |
| Maribyrnong | Victoria | VIC | 3032 |
| Marionvale | Victoria | VIC | 3634 |
| Markwood | Victoria | VIC | 3678 |
| Marlbed | Victoria | VIC | 3483 |
| Marlo | Victoria | VIC | 3888 |
| Marnoo | Victoria | VIC | 3387 |
| Marnoo East | Victoria | VIC | 3477 |
| Marnoo West | Victoria | VIC | 3387 |
| Marong | Victoria | VIC | 3515 |
| Maroona | Victoria | VIC | 3377 |
| Marraweeney | Victoria | VIC | 3669 |
| Marshall | Victoria | VIC | 3216 |
| Marthavale | Victoria | VIC | 3875 |
| Marungi | Victoria | VIC | 3634 |
