Dornod is the easternmost of the 21 aimags of Mongolia. Its capital is Choibalsan.PopulationHalh are the ethnic majority of the Dornod aimag, but Buryat ethnic group is 22.8% of population total (17,196 in 2000, census) concentrated in the north-eastern sums of Dashbalbar, Tsagaan-Ovoo, Bayan-Uul, Bayandun and aimag capital Choibalsan. There are several small ethnic groups: Barga (populates Gurvanzagal and Hölönbuir sums), Uzemchin (are present in Sergelen, Bayantümen, Bulgan, Chuluunhoroot sums and Choibalsan city), Hamnigan ethnic group (Bayan-Uul and Tsagaan-Ovoo sums).HistoryThe aimag was created during the administrative reorganisation of 1941 with the name of Choibalsan, after the communist leader Khorloogiin Choibalsan. The capital, which previously had been called Bayan Tümen, also received the name Choibalsan. In 1963, the aimag was given the current name Dornod.