Dromo County or Chomo or Yadong County is a frontier county and trade-market of Tibet Autonomous Region, China, situated in the mouth of the Chumbi valley near the China-India and China-Bhutan border. It lies in the middle part of Himalayas and the south of Tibet Autonomous Region, covering about 4,306 square kilometers with a population of 10,000. It is under the jurisdiction of Xigazê.