| Place | Post Code |
|---|---|
| Rychnowo, Grunwald | 14-106 |
| Rychnowska Wola, Grunwald | 14-106 |
| Rzepki, Grunwald | 14-107 |
| Stębark, Grunwald | 14-107 |
| Szczepankowo, Grunwald | 14-107 |
| Tymawa, Grunwald | 14-107 |
| Ulnowo, Grunwald | 14-107 |
| Wróble, Grunwald | 14-107 |
| Zapieka, Grunwald | 14-107 |
| Zybułtowo, Grunwald | 14-107 |