Yang County, affiliated to Hanzhong City of Shanxi Province, is located in the southwest of Shanxi Province, the eastern margin of Hanzhong Basin, north Qinling Mountains, south Bashan, east Foping, Shiquan County, south Xixiang County, west Chenggu County, north Liuba, Taibai County. Between east longitude 107°11 '-108 °33', north latitude 33°02 '-33 °43', east and west span 0°52 ', horizontal distance 92.8 kilometers; North-south span 0°41 ', horizontal distance 72.7 km; The total area is 3206 square kilometers. It has jurisdiction over 3 subdistricts and 15 towns.

Han River from west to east across Yang County, a north subtropical inland monsoon climate, the territory of four distinct seasons, sufficient light, mild and humid climate. In November 2013, the General Administration of Quality Supervision, Inspection and Quarantine officially approved the establishment of "National Crested Ibis Ecological Protection Industry Famous Brand Demonstration Zone" in Yang County, Hanzhong City, Shanxi Province, which is the only organic industry demonstration zone approved to be established in China.

By the end of 2021, Yangxian has a permanent population of 343,100. In 2021, the gross regional product of Yangxian County reached 19.29 billion yuan, of which the added value of the primary industry was 3.808 billion yuan, the secondary industry 8.887 billion yuan and the tertiary industry 6.595 billion yuan.