Area Codes in Loei
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 42 | Udon Thani | Udon Thani Province | 247,231 | Thailand | Asia/Bangkok |
Nearby Cities
| City | Region | Country | Population | Area Codes | Postal Codes |
|---|---|---|---|---|---|
| Nam Nao District | Phetchabun Province | Thailand | — | 43 | 67260 |
| Nong Bua Lamphu | Nong Bua Lamphu Province | Thailand | 34,401 | 42 | 39000, 39170 |
| Nong Khai | Nong Khai Province | Thailand | 63,609 | 42 | 43000 |
| Udon Thani | Udon Thani Province | Thailand | 247,231 | 42 | 41000 |
| Vientiane | Vientiane Prefecture | Laos | 196,731 | 21, 23 | — |