| En Name: | Srednekolymsky District |
| Ru Name: | Среднеколымский улус |
| Loc Name1: | Орто Халыма улууhа |
| Loc Lang1: | Sakha |
| Coordinates: | 67.45°N 195°W |
| Image Coa: | Coat of Arms of Srednekolymskiy rayon (Yakutia).png |
| Federal Subject: | Sakha Republic |
| Adm Data As Of: | June 2009 |
| Adm Ctr Type: | town |
| Adm Ctr Name: | Srednekolymsk |
| Town Of District Significance Type: | Towns under district jurisdiction |
| No Of Towns Of District Significance: | 1 |
| Selsoviet Type1: | Rural okrugs |
| No Of Selsoviets Type1: | 9 |
| No Of Cities Towns: | 1 |
| No Of Rural Localities: | 14 |
| Mun Data As Of: | December 2008 |
| Mun Formation1: | Srednekolymsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 1 |
| Mun Formation1 No Of Rural Settlements: | 9 |
| Mun Formation1 Counts Ref: | [1] |
| Area As Of: | June 2009 |
| Area Km2: | 125200 |
| Pop 2010Census: | 7897 |
| Urban Pop 2010Census: | 44.6% |
| Rural Pop 2010Census: | 55.4% |
| Established Date: | May 25, 1930 |
| Website: | https://mr-srednekolymskij.sakha.gov.ru/ |
| Date: | April 2013 |
Srednekolymsky District (Russian: link=no|Среднеколы́мский улу́с; Yakut: Орто Халыма улууһа, Orto Xalıma uluuha, pronounced as /oɾto xalɯma uluːha/) is an administrative[2] and municipal[3] district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia. It is located in the north of the republic and borders with Verkhnekolymsky District in the south, Abyysky District in the west, Allaikhovsky District in the northwest, Nizhnekolymsky District in the north, Bilibinsky District of Chukotka Autonomous Okrug in the east, and with Srednekansky District of Magadan Oblast in the southeast. The area of the district is 125200km2.[4] Its administrative center is the town of Srednekolymsk. Population: 8,353 (2002 Census); The population of Srednekolymsk accounts for 44.6% of the district's total population.
The landscape of the district is mostly flat. The main rivers in the district include the Kolyma, the Alazeya and the Rossokha with the Arga-Yuryakh. There are many lakes, the largest of which are Lakes Pavylon and Balyma. Mount Chubukulakh is located in the district.[5]
Average January temperature is and average July temperature is .[6] Annual precipitation ranges from 150mm200mm in the north to 250mm300mm in the east.
The district was established on May 25, 1930.
As of the 2021 Census, the ethnic composition was as follows:[7]
79.9%
9.8%
7.8%
1.0%
The economy of the district is mostly based on grazing-based animal husbandry, including reindeer, horse and cattle industries. There are deposits of construction materials.
| Towns | Population | Male | Female | Inhabited localities in jurisdiction | |
|---|---|---|---|---|---|
| Srednekolymsk (Russian: Среднеколымск) | 3528 | 1668 (47.3%) | 1860 (52.7%) |
| |
| Rural settlements | Population | Male | Female | Rural localities in jurisdiction* | |
| Alazeysky Nasleg (Russian: Алазейский наслег) | 518 | 247 (47.7%) | 271 (52.3%) |
| |
| Baydinsky Nasleg (Russian: Байдинский наслег) | 502 | 247 (47.7%) | 271 (52.3%) |
| |
| Berezovsky National Nomadic Nasleg (Russian: Березовский национальный кочевой наслег) | 338 | 181 (53.6%) | 157 (46.4%) | ||
| Kangalassky 1-y Nasleg (Russian: Кангаласский 1-й наслег) | 557 | 270 (48.5%) | 287 (51.5%) |
| |
| Kangalassky 2-y Nasleg (Russian: Кангаласский 2-й наслег) | 504 | 249 (49.4%) | 255 (50.6%) |
| |
| Myatissky 1-y Nasleg (Russian: Мятисский 1-й наслег) | 522 | 256 (49.0%) | 266 (51.0%) |
| |
| Myatissky 2-y Nasleg (Russian: Мятисский 2-й наслег) | 611 | 309 (50.6%) | 302 (49.4%) | ||
| Sen-Kyuyolsky Nasleg (Russian: Сень-Кюёльский наслег) | 523 | 259 (49.5%) | 264 (50.5%) |
| |
| Khatyngakhsky Nasleg (Russian: Хатынгнахский наслег) | 294 | 139 (47.3%) | 155 (52.7%) |
|