| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Büyükcami mah., Bolu) | 14020 |
| Postal/ZIP Codes in Karaköy mah., Bolu) | 14020 |
| Postal/ZIP Codes in Küçükberk mah., Bolu) | 14020 |
| Postal/ZIP Codes in Yenimahalle mah., Bolu) | 14020 |
| Postal/ZIP Codes in Yukarısoku mah., Bolu) | 14020 |