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.