| Locality | Post Code |
|---|---|
| Archer, Merrick | 68816 |
| Central City, Merrick | 68826 |
| Chapman, Merrick | 68827 |
| Clarks, Merrick | 68628 |
| Midland, Merrick | 68816 |
| Palmer, Merrick | 68864 |
| Riverside Park, Merrick | 68826 |
| Saint Libory, Merrick | 68872 |
| Silver Creek, Merrick | 68663 |
| Vieregg, Merrick | 68827 |