Phonthong's 2026 population is now estimated at 43,477. In 2005, the population of Phonthong was 11,189. Phonthong has grown by 2,120 in the last year, which represents a 5.13% annual change. These population values and projections come from Laos settlement census series 2005 and 2015 via CityPopulation fallback access and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Vientiane | 680,798 | 0.85% |
| Luang Prabang | 82,630 | 1.96% |
| Pakse | 81,748 | 1.68% |
| Savannakhet | 72,911 | -2.06% |
| Phonsavan | 64,021 | 2.53% |
| Houayxay | 51,765 | 5.13% |
| Oudomxai | 47,243 | 2.69% |
| Phonthong | 43,477 | 5.13% |
| Luang Namtha | 41,050 | 3.36% |
| Paklay | 39,932 | 5.13% |
| Thakhek | 38,674 | 0.07% |
| Paksane | 37,924 | 3.56% |
| Vangvieng | 36,277 | 5.13% |
| Phonhong | 35,546 | 1.31% |
| Xaignabouli | 35,116 | 1% |
| Sekong | 34,866 | 5.13% |
| Phiang | 34,442 | 0% |
| Nambak | 27,814 | 0% |
| Seno | 25,135 | 0% |
| Laksao | 23,840 | 2% |
| Attapeu | 23,668 | 3.63% |
| Champhone | 21,005 | 2.71% |
| Sam Neua | 18,892 | 0.71% |
| Bolikanh | 18,354 | 0% |
| Viengkham | 17,696 | 0% |
| Hongsa | 17,481 | 0% |
| Saysettha | 17,264 | 0% |
| Salavan | 15,952 | 2.13% |
| Sanasomboon | 15,825 | 0% |
| Champasak | 15,440 | 0% |
| Houne | 15,205 | 0% |
| Songkhone | 15,160 | 0% |
| Tonpheung | 15,023 | 0% |
| Thoulakhom | 14,731 | 0.4% |
| Meun | 14,320 | 0% |
| Thateng | 14,021 | 0% |
| Pakngum | 13,482 | 0% |
| Pathoomphone | 12,507 | 0% |
| Xienghone | 12,479 | 0% |
| Phongsaly | 12,459 | 3.92% |
| Xepon | 12,342 | 0% |
| Bachiang | 12,116 | 0% |
| Feuang | 11,556 | 0% |
| Xaybouathong | 11,377 | 0% |
| Nan | 11,104 | 0% |
| Kenethao | 10,858 | 0% |
| Xaysomboun | 9,817 | 0% |
| Phine | 6,845 | -2.59% |
