Ust-Orda Buryat Okrug

Ust-Orda Buryat Okrug (Russian: Усть-Орды́нский Буря́тский о́круг; Buryat: Усть-Ордын Буряадай округ Ust'-Ordyn Burjaadaj okrug), or Ust-Orda Buryatia, is an administrative division of Irkutsk Oblast, Russia. It was a federal subject of Russia (an autonomous okrug of Irkutsk Oblast) from 1993 to January 1, 2008, when it merged with Irkutsk Oblast. It also had autonomous okrug status from September 26, 1937 to 1993. Prior to the merger, it was called Ust-Orda Buryat Autonomous Okrug (Усть-Орды́нский Буря́тский автоно́мный о́круг).

It has an area of 22,138.1 square kilometers (8,547.6 sq mi). Population: 125,177 (2010 Census).

The settlement of Ust-Ordynsky is the autonomous okrug's administrative center and its most populous inhabited locality.

In a referendum held on April 16, 2006, the majority of residents in Irkutsk Oblast and Ust-Orda Buryat Autonomous Okrug agreed to the unification of the two regions. According to regions' electoral commissions, 68.98% of residents of Irkutsk Oblast and 99.51% of residents in Ust-Orda Buryatia took part in the vote, making it one of the best attended plebiscites in the country since the 2003 Russian election. The merger was approved by an absolute majority of the electorate: by 89.77% in Irkutsk Oblast and by 97.79% in Ust-Orda Buryatia. The enlarged Irkutsk Oblast has officially come into existence on January 1, 2008.

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