| Place | Postal Code |
|---|---|
| Borcz, Somonino | 83-312 |
| Egiertowo, Somonino | 83-312 |
| Goręczyno, Somonino | 83-311 |
| Hopowo, Somonino | 83-312 |
| Kamela, Somonino | 83-312 |
| Kaplica, Somonino | 83-315 |
| Ostrzyce, Somonino | 83-311 |
| Piotrowo, Somonino | 83-315 |
| Połęczyno, Somonino | 83-312 |
| Ramleje, Somonino | 83-311 |
| Rąty, Somonino | 83-315, 83-314, 83-311 |
| Rybaki, Somonino | 83-315 |
| Sławki, Somonino | 83-312, 83-314 |
| Somonino, Somonino | 83-314 |
| Starkowa Huta, Somonino | 83-312, 83-315 |
| Wyczechowo, Somonino | 83-312, 83-314, 83-307 |