 As of the 2010 Census, its population was 979.The settlement is located by the Kyundyulyun mountains, from Deputatsky, the administrative center of the district,

Urban-type settlement status was granted to Ust-Kuyga in 1967.Within the framework of administrative divisions, the urban-type settlement of Ust-Kuyga is incorporated within Ust-Yansky District as the Settlement of Ust-Kuyga.