Luanping County (simplified Chinese: 滦平县; traditional Chinese: 灤平縣; pinyin: Luánpíng Xiàn) is a county of northeastern Hebei province, China, with the Great Wall demarcating its border with Miyun County, Beijing. It is under the administration of Chengde City, and has a population of 340,000 residing in an area of 3,195 km2 (1,234 sq mi). The G45 Daqing–Guangzhou Expressway, China National Highways 101 and 112, and the Beijing–Tongliao Railway pass through the county.