| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Niszczyce-Pieńki, Bielsk | 09-230 |
| Postal/ZIP Codes in Pęszyno, Bielsk | 09-412 |
| Postal/ZIP Codes in Rudowo, Bielsk | 09-230 |
| Postal/ZIP Codes in Sękowo, Bielsk | 09-412 |
| Postal/ZIP Codes in Śmiłowo, Bielsk | 09-230 |
| Postal/ZIP Codes in Smolino, Bielsk | 09-230 |
| Postal/ZIP Codes in Strusino, Bielsk | 09-412 |
| Postal/ZIP Codes in Szewce, Bielsk | 09-230 |
| Postal/ZIP Codes in Tchórz, Bielsk | 09-442 |
| Postal/ZIP Codes in Tłubice, Bielsk | 09-230 |
| Postal/ZIP Codes in Ułtowo, Bielsk | 09-230 |
| Postal/ZIP Codes in Umienino, Bielsk | 09-412 |
| Postal/ZIP Codes in Zągoty, Bielsk | 09-230 |
| Postal/ZIP Codes in Zagroba, Bielsk | 09-230 |
| Postal/ZIP Codes in Zakrzewo, Bielsk | 09-230 |
| Postal/ZIP Codes in Żukowo, Bielsk | 09-411 |