Area Codes in De Bilt
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 30 | Utrecht | Utrecht (province) | 290,529 | Netherlands | Europe/Amsterdam |
Nearby Cities
| City | Region | Country | Population | Area Codes | Postal Codes |
|---|---|---|---|---|---|
| Bilthoven | Utrecht (province) | Netherlands | — | 30 | 3721, 3722, 3723 |
| Bunnik | Utrecht (province) | Netherlands | 14,064 | 30 | 3981 |
| Groenekan | Utrecht (province) | Netherlands | — | 346 | 3737 |
| Maartensdijk | Utrecht (province) | Netherlands | — | 346 | 3738, 3739, 3737 |
| Zeist | Utrecht (province) | Netherlands | 60,949 | 30 | 3701, 3702, 3703, 3704 |