Area Codes in Joniec
| 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 |
|---|---|---|---|---|---|
| Adamowo, Gmina Nowe Miasto | Masovian Voivodeship | Poland | 2,000 | 23 | 09-120 |
| Cieksyn | Masovian Voivodeship | Poland | — | 23 | 05-192 |
| Sochocin | Masovian Voivodeship | Poland | 1,945 | 23 | 09-110 |
| Toruń Włościański | Masovian Voivodeship | Poland | — | 56, 55 | — |
| Zakroczym | Masovian Voivodeship | Poland | 3,347 | 22 | 05-170 |