Udon Thani, a northeastern province covering an area of 11,730 square kilometers, is a prime business center of I-San. Located 564 kilometers from Bangkok, it the world heritage site for the prehistoric culture of Ban Chiang.

Udon Thani is probably best known for its archaeological wonders, paramount among them the hamlet of Ban Chiang where the world's first Bronze Age civilization is believed to have flourished more than 5,000 years ago.

Udon Thani borders Nong Khai to the north, Khon Kaen to the south, Sakon Nakhon to the east and Nongbualamphu and Loei to the west. The province is located on a plateau which is approximately 187 metres above sea level. Most of its areas are covered with rice fields, forests and hills, with the Phu Pan mountain ranges and the Songkhram River are the provinces 2 main natural resources.

The locals are mainly engaged in agricultural activities, with particular rising in wholesale and retail trading activities. That is why Udon Thani is an agricultural market hub or neighboring provinces.

Udon Thani's provincial seal depicts God Wetsuwan, King of the giants and keeper of the Northern Heavenly Gate.