| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Çevrik mah., Düzce) | 81700 |
| Postal/ZIP Codes in Mehmet Akif mah., Düzce) | 81700 |
| Postal/ZIP Codes in Orta mah., Düzce) | 81700 |
| Postal/ZIP Codes in Yaka mah., Düzce) | 81700 |
| Postal/ZIP Codes in Yeni mah., Düzce) | 81700 |
| Postal Codes in Cumayeri | |
|---|---|
| Postal/ZIP Codes in Cumayeri | |
| Postal/ZIP Codes in Merkezköyler | |