| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Sierzenko, Bytów | 77-131 |
| Postal/ZIP Codes in Sierzno, Bytów | 77-131 |
| Postal/ZIP Codes in Świątkowo, Bytów | 77-100 |
| Postal/ZIP Codes in Świerkówko, Bytów | 77-100 |
| Postal/ZIP Codes in Szarzyn, Bytów | 77-121 |
| Postal/ZIP Codes in Udorpie, Bytów | 77-100 |
| Postal/ZIP Codes in Ząbinowice, Bytów | 77-100 |
| Postal/ZIP Codes in Zbysław, Bytów | 77-114 |