Udon Thani is a city in Isan, the capital of Udon Thani Province and the sixth largest city in Thailand. The city municipality had a population of 130,531 people as of 2019, while Udon Thani's urban area, Mueang Udon Thani, has a population of approximately 400,000. Udon Thani is one of four major cities in Isan, the others being Nakhon Ratchasima, Ubon Ratchathani, and Khon Kaen. Together they a…