Ulan County
| Ulan County ᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ · དབུས་ལམ་རྫོང་། · 乌兰县 Wulan | |
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| Chaka Salt Lake, Ulan County | |
| Location of Ulan County (red) within Haixi Prefecture (yellow) and Qinghai | |
| Coordinates: 36°49′N 98°17′E / 36.817°N 98.283°E | |
| Country | China | 
| Province | Qinghai | 
| Autonomous prefecture | Haixi | 
| County seat | Xireg | 
| Area | |
|  • Total | 12,858.16 km2 (4,964.56 sq mi) | 
| Population  (2020) | |
|  • Total | 31,507 | 
| • Density | 2.5/km2 (6.3/sq mi) | 
| Time zone | UTC+8 (China Standard) | 
| Website | www | 
| Ulan County | |||||||
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| Chinese name | |||||||
| Simplified Chinese | 乌兰县 | ||||||
| Traditional Chinese | 烏蘭縣 | ||||||
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| Tibetan name | |||||||
| Tibetan | དབུས་ལམ་རྫོང་། | ||||||
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| Mongolian name | |||||||
| Mongolian script | ᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ | ||||||
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Ulan or Wulan (Mongolian: ᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ; Tibetan: དབུས་ལམ་རྫོང་།; Chinese: 乌兰县) is a county of Qinghai Province, China. It is under the administration of Haixi Mongol and Tibetan Autonomous Prefecture. County seat is Xireg.
The name of the county comes from a Mongolian word which means "red".