List of All Postal Codes in Ciechanów County | ||
|---|---|---|
| Postal Code Code | Postal Code Name | Voivodeship |
| 06-400 | Ciechanów | Masovian Voivodeship |
| 06-404 | Opinogóra Górna | Masovian Voivodeship |
| 06-406 | Opinogóra Górna | Masovian Voivodeship |
| 06-410 | Ciechanów | Masovian Voivodeship |
| 06-413 | Ciechanów | Masovian Voivodeship |
| 06-420 | Gołymin-Ośrodek | Masovian Voivodeship |
| 06-430 | Sońsk | Masovian Voivodeship |
| 06-440 | Sońsk | Masovian Voivodeship |
| 06-450 | Glinojeck | Masovian Voivodeship |
| 06-452 | Glinojeck | Masovian Voivodeship |
| 06-456 | Ojrzeń | Masovian Voivodeship |
| 06-460 | Grudusk | Masovian Voivodeship |
| 06-461 | Regimin | Masovian Voivodeship |