Administrative divisions of Mongolia
Mongolia is divided into 22 first-level administrative divisions:
Largest cities in Mongolia
| # | City | Population |
|---|---|---|
| 1 | UlaanbaatarCapital | 885,000 |
| 2 | Erdenet | 79,647 |
| 3 | Darkhan | 74,738 |
| 4 | Ulaangom | 35,796 |
| 5 | Olgiy | 34,934 |
| 6 | Choibalsan | 33,376 |
| 7 | Altai | 32,488 |
| 8 | Dund-Us | 30,500 |
| 9 | Arvaikheer | 28,053 |
| 10 | Mörön | 27,690 |
Ulaanbaatar is the largest urban area in Mongolia with about 885,000 people.
Terrain, rivers & lakes
Highest terrain in Mongolia: ≈ 4,325 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
🌊 Rivers
- Herlen
- Shishhid Gol
- Ideriyn
- Selenga
- Onon
- Orhon
🏞️ Lakes
- Khövsgöl Nuur
- Har Us Nuur
- Buyr Nuur
- Reg Nuur
- Dood-Tsagaan Nuur
- Lake
- Achit Nuur
- Telmen Nuur
- Sangiyn Dalay Nuur
- Hh Nuur
- Uvs Nuur
- Khyargas Nuur
- Har Nuur
- Airag Lake
Ethnic groups in Mongolia
Khalkh 83.8%, Kazak 3.8%, Durvud 2.6%, Bayad 2%, Buriad 1.4%, Zakhchin 1.2%, Dariganga 1.1%, other 4.1% (2020 est.)
Regionally, Khalkh is the most common ethnic group across most of the 22 divisions, while Kazak predominates in 1 division (Bayan-Ölgiy); Durvud predominates in 1 division (Uvs).
Source: CIA World Factbook (2020 est.) · regional dominance compiled by Glostats from censuses and surveys
Religions in Mongolia
Buddhist 51.8%, no religion 40.6%, Muslim 3.2%, Shaman 2.5%, Christian 1.3%, Other 0.6% (2020 est.)
Regionally, Buddhist is the most common religious group across most of the 22 divisions, while Muslim predominates in 1 division (Bayan-Ölgiy).
Source: CIA World Factbook (2020 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Mongolia
Mongolian 90% (official, Khalkha dialect is predominant), Turkic, Russian (1999)
Regionally, Mongolian is the most common language group across most of the 22 divisions, while Kazakh predominates in 1 division (Bayan-Ölgiy).
Source: CIA World Factbook · regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-19. More about our data.