Area Codes in Bolu Province
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 374 | — | Bolu Province | 283,496 | Turkey | Europe/Istanbul |
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 374 | — | Bolu Province | 283,496 | Turkey | Europe/Istanbul |