Xinchengzi Town is a town located in the Miyun District of Beijing, China. It serves as a residential area with a population that recorded 6,528 residents under its administration as of 2020.
The town is situated among several neighboring administrative areas. It borders Liangjianfang and Laowa Townships to the north, Wulingshan Town to the east and south, and Gubeikou and Taishitun Towns to the west.