Ulan-Ude (/ʊˈlɑːnʊˈdɛ/;[8] .mw-parser-output .tfd-dated{font-size:85%}.mw-parser-output .tfd-default{border-bottom:1px solid var(--border-color-base,#a2a9b1);clear:both;text-align:center}.mw-parser-output .tfd-tiny{font-weight:bold}.mw-parser-output .tfd-inline{border:1px solid var(--border-color-base,#a2a9b1)}.mw-parser-output .tfd-sidebar{border-bottom:1px solid var(--border-color-base,#a2a9b1);text-align:center;position:relative}@media(min-width:640px){.mw-parser-output .tfd-sidebar{clear:right;float:right;width:22em}}‹See Tfd›Russian: Улан-Удэ, .mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}Russian pronunciation: [ʊˈlan ʊˈdɛ]; Buryat: Улаан-Үдэ, romanized: Ulaan-Üde, IPA [ʊˌlaːɴ‿ˈʉdə]) is the capital city of Buryatia, Russia, located about 100 kilometers (62 mi) southeast of Lake Baikal on the Uda River at its confluence with the Selenga. According to the 2021 Census, 437,565 people lived in Ulan-Ude; up from 404,426 recorded in the 2010 Census,[9] making the city the third-largest in the Russian Far East by population. Ulan-Ude was first called Udinskoye (Удинское, [ˈudʲɪnskəjə]) for its location on the Uda River. It was founded as a small fort in 1666.[10] From around 1735, the settlement was called Udinsk (Удинск, [ʊˈdʲinsk]) and was granted town status under that name in 1775.[citation needed] It was renamed Verkhneudinsk (Верхнеудинск, [vʲɪrxnʲɪˈudʲɪnsk]; "Upper Udinsk") in 1783, to differentiate it from Nizhneudinsk ("Lower Udinsk") lying on a different Uda River near Irkutsk which was granted town status that year.[citation needed]