Usun-Kyuyol (; , Uhun Küöl) is a rural locality (a selo), the only inhabited locality, and the administrative center of Arylakhsky Rural Okrug of Suntarsky District in the Sakha Republic, Russia, located from Suntar, the administrative center of the district.Registry of the Administrative-Territorial Divisions of the Sakha Republic Its population as of the 2010 Census was 667,This figure is given for Arylakhsky Rural Settlement, a municipal formation of Suntarsky Municipal District. According to Law #173-Z 353-III, Usun-Kyuyol is the only inhabited locality on the territory of this municipal formation. down from 800 recorded during the 2002 Census.
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Sources Official website of the Sakha Republic. Registry of the Administrative-Territorial Divisions of the Sakha Republic. Suntarsky District.