| Locality | Post Code |
|---|---|
| Blanchard, Montcalm | 49310 |
| Carson City, Montcalm | 48811 |
| Cedar Lake, Montcalm | 48812 |
| Coral, Montcalm | 49322 |
| Crystal, Montcalm | 48818 |
| Edmore, Montcalm | 48829 |
| Fenwick, Montcalm | 48834 |
| Gowen, Montcalm | 49326 |
| Greenville, Montcalm | 48838 |
| Howard City, Montcalm | 49329 |
| Hubbardston, Montcalm | 48845 |
| Lakeview, Montcalm | 48850 |
| McBride, Montcalm | 48852 |
| McBrides, Montcalm | 48852 |
| Morley, Montcalm | 49336 |
| Pierson, Montcalm | 49339 |
| Riverdale, Montcalm | 48877 |
| Sand Lake, Montcalm | 49343 |
| Sheridan, Montcalm | 48884 |
| Sidney, Montcalm | 48885 |
| Six Lakes, Montcalm | 48886 |
| Stanton, Montcalm | 48888 |
| Trufant, Montcalm | 49347 |
| Vestaburg, Montcalm | 48891 |