| Yanshan County | |
| Settlement Type: | County |
| Mapsize: | 250px |
| Pushpin Map: | Yunnan |
| Coordinates: | 23.61°N 104.3375°W |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Yunnan |
| Subdivision Type2: | Autonomous prefecture |
| Subdivision Name2: | Wenshan |
| Seat Type: | County seat |
| Seat: | Jiangna |
| Area Total Km2: | 3888 |
| Population As Of: | 2020 census |
| Population Footnotes: | [1] |
| Population Total: | 476587 |
| Population Density Km2: | auto |
| Timezone: | CST |
| Utc Offset: | +8 |
| Postal Code Type: | Postal code |
| Postal Code: | 663100 |
| Area Code: | 0876 |
Yanshan County (; za|Yensanh Yen) is under the administration of the Wenshan Zhuang and Miao Autonomous Prefecture, in the southeast of Yunnan province, China.
In the present, Yanshan County has 4 towns 3 townships and 4 ethnic townships.[2]
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