With Changbai Mountains in the north as its back and the Yellow Sea in the south in front,Dandong and Sinuiju-a city of the North Korea face each other across the river.

• 市区位于辽宁省东南部的鸭绿江畔，北依长白山脉，南临黄海，隔江与朝鲜新义州市相望。