| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Altmünster, Altmünster | 4801, 4810, 4813, 4814 |
| Postal/ZIP Codes in Eben, Altmünster | 4801, 4813, 4814 |
| Postal/ZIP Codes in Ebenzweier, Altmünster | 4813 |
| Postal/ZIP Codes in Eck, Altmünster | 4810, 4813 |
| Postal/ZIP Codes in Gmundnerberg, Altmünster | 4812, 4813, 4814 |
| Postal/ZIP Codes in Grasberg, Altmünster | 4813, 4814 |
| Postal/ZIP Codes in Mühlbach, Altmünster | 4801 |
| Postal/ZIP Codes in Nachdemsee, Altmünster | 4801, 4813 |
| Postal/ZIP Codes in Neukirchen, Altmünster | 4812, 4813, 4814 |
| Postal/ZIP Codes in Reindlmühl, Altmünster | 4814 |