Area Codes in Bilthoven
| 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 |
|---|---|---|---|---|---|
| Bosch en Duin | Utrecht (province) | Netherlands | — | 30 | 3735, 3712 |
| De Bilt | Utrecht (province) | Netherlands | 42,111 | 30 | 3731, 3732, 3584, 3721 |
| Den Dolder | Utrecht (province) | Netherlands | — | 30 | 3734, 3712, 3735, 3768 |
| Groenekan | Utrecht (province) | Netherlands | — | 346 | 3737 |
| Maartensdijk | Utrecht (province) | Netherlands | — | 346 | 3738, 3739, 3737 |