Vilyuysky District

Vilyuysky District (Вилю́йский улу́с; Бүлүү улууһа, Bülüü uluuha, ) is an administrative and municipal district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia. It is located in the western central part of the republic and borders with Zhigansky District in the northeast, Kobyaysky District in the east, Gorny District in the south, Verkhnevilyuysky District in the west, and with Olenyoksky District in the northwest. The area of the district is 55200 km2. Its administrative center is the town of Vilyuysk. Population: 25,696 (2002 Census);  The population of Vilyuysk accounts for 40.6% of the district's total population.

Geography
Main rivers in the district include the Vilyuy and its tributaries the Tyung and Chybyda, as well as the Tympylykan and Lungkha tributaries of the Lena.

History
The district was established on January 9, 1930.

Demographics
As of the 2021 Census, the ethnic composition was as follows:
 * Yakuts: 87.4%
 * Russians: 9.1%
 * Evens: 2.1%
 * other ethnicities: 1.4%

Economy
The economy of the district is mostly based on agriculture.

Inhabited localities
Divisional source:

Population source: *Administrative centers are shown in bold