Oymyakonsky District (Russian: Оймяко́нский улу́с; Sakha: Өймөкөөн улууһа) is an administrative and municipal district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia. It is located in the east of the republic and borders with Ust-Maysky District in the southwest, Tomponsky District in the west, Momsky District in the north, Magadan Oblast in the east, and with Khabarovsk Krai in the south. The area of the district is 92,300 square kilometers (35,600 sq mi). Its administrative center is the urban locality (a settlement) of Ust-Nera. Population: 10,109 (2010 Census); 14,670 (2002 Census); 31,078 (1989 Census).