Regional postal directory
Düzce postal areas
- Place records
- 317
- Postal codes
- 14
- Named places
- 305
- Mapped records
- 317
- Shared codes
- 9
Source: GeoNames postal-code snapshot checked 2026-07-18. Postal data © GeoNames.org, CC BY 4.0. Accuracy codes belong to the source and are not a ZipCodeGlobe verification claim.