| Place | Post Code |
|---|---|
| Adamowo, Chrostkowo | 87-602 |
| Chojno, Chrostkowo | 87-602 |
| Chrostkowo, Chrostkowo | 87-602 |
| Chrostkowo Nowe, Chrostkowo | 87-602 |
| Głęboczek, Chrostkowo | 87-602 |
| Gołuchowo, Chrostkowo | 87-602 |
| Janiszewo, Chrostkowo | 87-602 |
| Kawno, Chrostkowo | 87-602 |
| Ksawery, Chrostkowo | 87-602 |
| Lubianki, Chrostkowo | 87-602 |
| Majdany, Chrostkowo | 87-602 |
| Makówiec, Chrostkowo | 87-602 |
| Nowa Wieś, Chrostkowo | 87-602 |
| Sikórz, Chrostkowo | 87-602 |
| Stalmierz, Chrostkowo | 87-602 |
| Wildno, Chrostkowo | 87-602 |