| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 202 | — | — | 6,368,162 | Laos | Asia/Vientiane |
| 205 | — | — | 6,368,162 | Laos | Asia/Vientiane |
| 207 | — | — | 6,368,162 | Laos | Asia/Vientiane |
| 209 | — | — | 6,368,162 | Laos | Asia/Vientiane |
| 21 | Vientiane | Vientiane Prefecture | 196,731 | Laos | Asia/Vientiane |
| 23 | Vientiane | Vientiane Prefecture | 196,731 | Laos | Asia/Vientiane |
| 31 | Pakse | Champasak Province | 88,332 | Laos | Asia/Vientiane |
| 34 | — | Salavan Province | 336,600 | Laos | Asia/Vientiane |
| 36 | Attapeu | Attapeu Province | 4,297 | Laos | Asia/Vientiane |
| 41 | Savannakhet | Savannakhet Province | 66,553 | Laos | Asia/Vientiane |
| 51 | Thakhek | Khammouane Province | 26,200 | Laos | Asia/Vientiane |
| 54 | Pakxan | Bolikhamsai Province | 21,967 | Laos | Asia/Vientiane |
| 61 | — | Xiangkhouang Province | 37,507 | Laos | Asia/Vientiane |
| 64 | — | Houaphanh Province | 286,383 | Laos | Asia/Vientiane |
| 71 | Luang Prabang | Luang Prabang Province | 47,378 | Laos | Asia/Vientiane |
| 74 | Sainyabuli | Sainyabuli Province | 13,500 | Laos | Asia/Vientiane |
| 81 | — | Oudomxay Province | 275,300 | Laos | Asia/Vientiane |
| 84 | — | Bokeo Province | 149,700 | Laos | Asia/Vientiane |
| 86 | Luang Namtha | Luang Namtha Province | 3,225 | Laos | Asia/Vientiane |
| 88 | Phongsali | Phongsaly Province | 13,500 | Laos | Asia/Vientiane |