About Udomsai
Udomsai is a city located in Laos, in the Udomsai region. According to the latest available data (2026), the population of Udomsai is approximately 345,425 residents, making it the second largest city in Laos.
Globally, Udomsai ranks #5,340 among the world's most populated cities.
Udomsai City Statistics
| City | Udomsai |
| Country |  Laos |
| Population | 345,425 |
| Global Rank | #5,340 |
| Rank in Laos | #2 of 8 cities |
| City Category | city |
| Region | Udomsai |
| Latitude | 20.7 |
| Longitude | 101.8167 |
| Data Year | 2026 |
Where is Udomsai Located?
Udomsai is located in Laos, in the Udomsai region, at coordinates 20.7° latitude and 101.8167° longitude. Located near the equator, Udomsai experiences a tropical climate with warm temperatures throughout the year.
Nearby Cities
Other Cities in Laos
Largest Cities in Laos
| # | City | Population |
|---|---|---|
| 1 | Vientiane | 698,254 |
| 3 | Savannakhet | 124,000 |
| 4 | Pāksē | 119,848 |
| 5 | Namtha District | 118,134 |
| 2 | Champhone District | 109,174 |
Frequently Asked Questions
What is the population of Udomsai?
The population of Udomsai is approximately 345,425 residents according to the latest available data (2026).
Where is Udomsai located?
Udomsai is located in Laos at approximately 20.7° latitude and 101.8167° longitude.
Is Udomsai one of the largest cities in Laos?
With a population of 345,425, Udomsai is one of the notable urban areas in Laos. It ranks #2 out of 8 cities in the country.
