Ganjiakou Subdistrict is a subdistrict of Haidian District, Beijing, It borders Zizhuyuan and Beixiaguan Subdistricts in the north, Zhanlan Road and Yuetan Subdistrict in the east, Yangfangdian Subdistrict in the south, and Balizhuang Subdistrict in the west. As of 2020, its population was 117,946. Wikipedia