Xinzhuang District is a district in the western part of New Taipei in northern Taiwan. It has an area of 19.74 km2 (7.62 sq mi) and a population of 421,248 people.

New Taipei City is a special municipality located in northern Taiwan. The city is home to an estimated population of 4,004,367 as of January 2023, making it the most populous city in Taiwan, and also the second largest special municipality by area, behind Kaohsiung. New Taipei City borders Keelung to the northeast, Yilan County to the southeast, and Taoyuan to the southwest, and completely encloses the city of Taipei. Banqiao District is its municipal seat and biggest commercial area.