Udon Thani Province

Bordering Nong Khai to the north, Sakon Nakhon to the east, and Khon Kaen to the south, Udon Thani occupies a strategic position near Laos, with Vientiane lying only about 55 kilometres from the provincial capital. The province recorded a population of approximately 1.56 million in 2023. Its proximity to Laos and its role as a US Air Force base during the Vietnam War spurred rapid urban and commercial development, and Udon Thani remains a major transport and trade hub. Red Lotus Lake (Talay Bua Daeng) at Nong Han Kumphawapi is a seasonal attraction where thousands of pink lotus blossoms cover the water surface each winter. The Huai Luang Reservoir provides irrigation water and a scenic recreational backdrop in the province's western reaches.