# Ust-Maysky District

Ust-Maysky District (Russian: Усть-Ма́йский улу́с; Yakut: Уус-Маайа улууһа, Uus-Maaya 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 east of the republic and borders with Oymyakonsky District in the northeast, Okhotsky District and Ayano-Maysky District of Khabarovsk Krai in the east and south, Aldansky District in the southwest, Amginsky District in the west, Churapchinsky and Tattinsky Districts in the northwest, and with Tomponsky District in the north. The area of the district is 95,300 square kilometers (36,800 sq mi). Its administrative center is the urban locality (a settlement) of Ust-Maya. Population: 8,629 (2010 Census); 11,568 (2002 Census); 20,337 (1989 Soviet census). The population of Ust-Maya accounts for 33.9% of the district's total population.

## Geography

The main rivers in the district are the Aldan and its tributaries the Maya and Allakh-Yun.
Average January temperature ranges from −40 to −42 °C (−40 to −44 °F) and average July temperature ranges from +14 °C (57 °F) in the mountains to +16 °C (61 °F) in the river valleys. Annual precipitation ranges from 250 to 500 millimeters (9.8 to 19.7 in).

## History

The district was established on May 20, 1931. The administrative centre of the district was Solnechny from 1972–1992, after which it moved to Ust-Maya.

## Demographics

As of the 2021 Census, the ethnic composition was as follows:
* Russians: 54.0%
* Evenks: 28.4%
* Yakuts: 9.9%
* Ukrainians: 1.9%
* Evens: 1.1%
* other ethnicities: 4.7%

## Economy

The economy of the district is mostly based on mining, timber industry, and production of construction materials. There are deposits of gold, lead, zinc, rare metals, and construction materials.

## Inhabited localities

Municipal composition :
| Urban settlements | Population | Male | Female | Inhabited localities in jurisdiction |
| Zvyozdochka (Звездочка) | 408 | 279 (68.4%) | 129 (31.6%) | Urban-type settlement of Zvyozdochka |
| Solnechny (Солнечный) | 1,034 | 534 (51.6%) | 500 (48.4%) | Urban-type settlement of Solnechny selo of Ust-Ynykchan |
| Ust-Maya (Усть-Мая) | 2,952 | 1,429 (48.4%) | 1,523 (51.6%) | Urban-type settlement of Ust-Maya (administrative centre of the district) selo of Ust-Yudoma |
| Eldikan (Эльдикан) | 1,515 | 726 (47.9%) | 789 (52.1%) | Urban-type settlement of Eldikan selo of 8-y km |
| Yugoryonok (Югоренок) | 272 | 176 (64.7%) | 96 (35.3%) | Urban-type settlement of Yugoryonok |
| Rural settlements | Population | Male | Female | Rural localities in jurisdiction* |
| Kyupsky National Nasleg (Кюпский национальный) | 536 | 263 (49.1%) | 273 (50.9%) | selo of Kyuptsy selo of Tumul |
| Petropavlovsky National Nasleg (Петропавловский национальный) | 985 | 478 (48.5%) | 507 (51.5%) | selo of Petropavlovsk selo of Troitsk |
| Ezhansky National Nasleg (Эжанский национальный) | 360 | 179 (49.7%) | 181 (50.3%) | selo of Ezhantsy |
| Villages | Population | Male | Female | Rural localities in jurisdiction* |
| Belkachi (Белькачи) | 179 | 96 (53.6%) | 83 (46.4%) | selo of Belkachi |
| Ust-Mil (Усть-Миль) | 292 | 147 (50.3%) | 145 (49.7%) | selo of Ust-Mil |
| Inhabited localities in the inter-settlement territory | Population | Male | Female | Inhabited localities in jurisdiction |
| Allakh-Yun (Аллах-Юнь) | 96 | 55 (57.3%) | 41 (42.7%) | Urban-type settlement of Allakh-Yun |
Divisional source: Population source: *Administrative centers are shown in bold