Kherlen

Choibalsan  is the fourth-largest city in Mongolia after Ulaanbaatar, Darkhan, and Erdenet. The name of the city was Bayan Tu'men  until 1941, when it was renamed after the communist leader Khorloogiin Choibalsan. It is the capital of the province of Dornod . The city administrative unit's official name is Kherlen sum, with area of 281 square kilometres or 108 square miles. It is situated at the Kherlen River, at an elevation of 747 metres or 2,451 feet above sea level.

The city of Choibalsan has a population of 45,490 (1994), 41,714 (2000), 36,142 (2003), 39,500 (2006), 39,500 (2007, 53.2% of the Dornod Aimag’s total population), 38,150 (2008 51.2% of the Aimag's population).

Choibalsan is inhabited primarily by Halh Mongols, with smaller numbers of Buryats, Barga Mongols, and Üzemchin. There is also a minority of immigrants from China who now constitutes the only China Town in Mongolia outside Ulaanbaatar. This is a place worth of a short visit for outsiders.