Langjiazhuang Township, Quyang County, Baoding City, Hebei Province, is located in the northern part of Quyang County, 35 kilometers south of the county, east of Tang County military township, south of Lingshan Township, west of Beitai Township, north of Fanjiazhuang Township. The maximum distance between east and west of the region is 11.9 kilometers, the maximum distance between north and south is 9.5 kilometers, with a total area of 95.98 square kilometers.At the end of 2018, Langjiazhuang Township had a total household population of 26,259.
Langjiazhuang Township is named after the township government in Langjiazhuang Village.In August 1958, Langjiazhuang People's Commune was established.In April 1984, Langjiazhuang Township was reorganized. As of June 2020, Langjiazhuang Township jurisdiction over 29 administrative villages, the township people's government in Langjiazhuang Village.
The main cash crop of Langjiazhuang Township is jujube.In 2013, the total agricultural output value of Langjiazhuang Township was 28.274 million yuan, and the net income per capita of farmers was 1,079 yuan.In 2018, Langjiazhuang Township has 3 industrial enterprises, and there are 8 general stores or supermarkets with business area over 50 square meters.