Derong County, subordinate to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the southwest of Sichuan Province, and in the middle of the Great Shangri-La Tourism Circle at the junction of Sichuan and Yunnan. It is adjacent to Batang and Xiangcheng County of Ganzi Prefecture in the north, Shangri-La County of Diqing Prefecture in Yunnan Province in the southeast, and Deqin County of Diqing Prefecture in Yunnan Province in the southwest. The total administrative area is 2916 square kilometers. As of 0:00 on November 1, 2020, the permanent population of Derong County was 24748.

"De Rong", formerly known as "De Long", was originally under the jurisdiction of Batang Chieftain and translated as "the land of the valley". In the Yuan Dynasty, it was under the jurisdiction of the Marshal's Office of Dosegan Propaganda Division. In the seventh year of Yongzheng's reign in the Qing Dynasty (1729), it belonged to the Batang Propaganda Department. In the second year of the Republic of China (1913), Derong County was established. In October 1955, it belonged to Ganzi Tibetan Autonomous Region of Sichuan Province. By October 2021, Derong County has jurisdiction over 4 towns and 6 townships; The People's Government of the County is located in the Party and Government Building of Hexi Shangjie, Sun Valley Town.

In 2021, Derong County's (estimated) GDP will reach 1.165 billion yuan; The per capita disposable income of rural residents is 14498 yuan; Per capita disposable income of urban residents is 40741 yuan.