Area Codes in Nasielsk
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 23 | Ciechanów | Masovian Voivodeship | 46,438 | Poland | Europe/Warsaw |
Nearby Cities
| City | Region | Country | Population | Area Codes | Postal Codes |
|---|---|---|---|---|---|
| Cieksyn | Masovian Voivodeship | Poland | — | 23 | 05-192 |
| Gaj, Pułtusk County | Masovian Voivodeship | Poland | — | 52 | — |
| Skrzeszew, Legionowo County | Masovian Voivodeship | Poland | — | 22 | — |
| Toruń Włościański | Masovian Voivodeship | Poland | — | 56, 55 | — |
| Winnica, Pułtusk County | Masovian Voivodeship | Poland | 560 | 23 | — |