Ubon Ratchathani Province covers a total area of 15,744.85 square kilometers, with Amnat Charoen Province to the north, the Banthat Mountain Range along the4 border of the Kingdom of Cambodia to the south, the Mekhong River and Lao People’s Democratic Republic to the east, and Yathothon and Si Sa Ket Provinces to the west.

Ubon Ratchathani is divided into 19 Amphoes and 6 King Amphoes, namely: Amphoe Muang, Amphoe Warin Chamrap, Amphoe Det Udom, Amphoe Buntharik, Amphoe Na Chaluai, Amphoe Nam Yun, Amphoe Khong Chiam, Amphoe Phibun Mangsahan, Amphoe Si Muang Mai, Amphoe Trakan Phutphon, Amphoe Khemarat, Amphoe Muang Samsip, Amphoe Khuang Nai, Amphoe Kut Khaopun, Amphoe Pho Sai, Amphoe Tan Sum, Amphoe Samrong, Amphoe Sirindhorn King Amphoe Don Mot Daeng, King Amphoe Thung Si Udom, King Amphoe Na Yia, King Amphoe No Tan, King Amphoe Lao Sua kok, and King Amphoe Sawang Wirawong.

The Kha and the Suai, two local tribes, had moved from Si Sattanakanahut to this area before the Rattanakosin Period.  During the reign of King Rama I, the King thought of locating the people scattered around because of war into one area.  Therefore, any leader who could gather the greatest number of people and establish a secure community would be promoted to the rank of Chao Muang or Chief.  For this reason, in 1786, Thao Kham Phong, who had led a group of his people to settle in the Huai

Chaeramae area on a plain on the bank of the Mun River, was promoted to the rank of Chief.  Later, when he helped the Thai troops to attack Nakhon Champasak, he was promoted to the rank of Phra Pathum Worarat Suriyawong and became Chao Muang or Governor of Ban Chaeramae, which was upgraded to the status of a province called Ubon Ratchathani.  Later, the city was moved to a new site at Dong U-Phung, which is the site of the present city with seven other towns as satellites.

During the reign of King Rama V, before the reform of the provincial administration which divided the kingdom into Monthon (circle), Changwat (province), and Amphoe (district), Ubon Ratchathani was annexed to Lao Kao town.  Later in 1899, the name of the area was changed to the Northeastern Monthon with Ubon Ratchathani as its administrative center, and the name was changed again in 1900 to Monthon I-San.

Because of the Depression in 1915, the status of Monthon Ubon Ratchathani was reduced to only a province in Monthon Nakhon Ratchsima in 1933, the division of the kingdom into Monthon was abolished and the city has been known as Ubon Ratchathani from that time on.

Transportation to Ubon Ratchathani is very convenient by car, train, and air.

By Car : Follow Highway 1 (Phahon Yothin Road) to Highway 2 (Friendship Highway).  Then follow Highway 2 to Highway 24 (Chok ChaiDet Udom); turning onto this route and following it untio the end.  The total distance is 629 kilometres.  On take Highway 2 to Nakhon Ratchasima and turn onto Highway 226 to Buri Ram – Surin – Si Sa Ket – Ubon Ratchathani.

By Bus: There are both air-conditioned and ordinary buses leaving from the Northeastern Bus Terminal (Talat Mo Chit) many times a day. For detailed information Tel. 272-5228 (Ordinary Bus) and 272-5299 (Air-con-ditioned Bus) – Ubon Ratchathani Bus Terminal Tel. (045) 241831.

Private agencies: Nakhon Chai Air Tel. 2725271 (at Ubon Ratchathani Tel. 269385-6), Mong Khon Tour Tel. 2725239 (at Ubon Ratchathani Tel. 255116), Chet Chai Tour Tel. 2725264 (at Ubon Ratchathani Tel. 254885, 255907), Sahamit Tour. Tel. 2725252 (at Ubon Ratchathani Tel. 255043), Sayan Tour (Ubon Ratchathani) Tel. 254885, 242163, Siri Ratanapon (Ubon Ratchathani) Tel. 245847, 441848.

By Train: There are ordinary, rapid, and express trains from Bangkok to Ubon ratchathani every day.  For more information please contact: Tel. 223-7010, 223-7020.

By Plane: Thai Airways International Ltd. Has a daily flight for passengers and air parcels from Bangkok to Ubon Ratchathani. Detailed information can be requested from Thai Airways International Ltd., Lan Luang Rd., Bangkok, Tel. 280-0060, 628-2000 and Ubon ratchathani Office, Tel. (045) 313340-4.

As for local transportation, there are bused running from Muang District to other districts and to other nearby provinces in the Northeast and the North, such as Chiang Mai.