| Place | Postal Code |
|---|---|
| Baraniec, Karniewo | 06-425 |
| Byszewo, Karniewo | 06-425 |
| Byszewo-Wygoda, Karniewo | 06-425 |
| Chełchy-Chabdzyno, Karniewo | 06-425 |
| Chełchy Dzierskie, Karniewo | 06-425 |
| Chełchy Iłowe, Karniewo | 06-425 |
| Chełchy-Jakusy, Karniewo | 06-425 |
| Chełchy-Klimki, Karniewo | 06-425 |
| Chełchy Kmiece, Karniewo | 06-425 |
| Chrzanowo-Bronisze, Karniewo | 06-425 |
| Czarnostów, Karniewo | 06-425 |
| Czarnostów-Polesie, Karniewo | 06-425 |
| Gościejewo, Karniewo | 06-100 |
| Karniewo, Karniewo | 06-425 |
| Konarzewo-Bolesty, Karniewo | 06-425 |
| Krzemień, Karniewo | 06-425 |
| Leśniewo, Karniewo | 06-425 |
| Łukowo, Karniewo | 06-425 |
| Malechy, Karniewo | 06-425 |
| Milewo-Malonki, Karniewo | 06-425 |
| Milewo-Wypychy, Karniewo | 06-425 |
| Obiecanowo, Karniewo | 06-425 |
| Ośnica, Karniewo | 06-425 |
| Rafały, Karniewo | 06-425 |
| Romanowo, Karniewo | 06-425 |
| Rutki, Karniewo | 06-425 |