Changbai Korean Autonomous County, or simply Changbai County, is a county in southern Jilin province, China, facing Hyesan, North Korea. It is under the administration of the city of Baishan, 160 kilometres (99 mi) to the west-northwest, and has an area of 2,497.6 km2 (964.3 sq mi). The county has a total population of 85,000 people, 14,000 of which are ethnic Koreans.

Hyesan is a city in the northern part of Ryanggang province of North Korea. It is a hub of river transportation as well as a product distribution centre. It is also the administrative centre of Ryanggang Province. As of 2008, the population of the city is 192,680.