Xinzhuang District (Chinese: 新莊區; Hanyu Pinyin: Xīnzhuāng Qū; Tongyong Pinyin: Sinjhuang Cyu) 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 (February 2023).

[1] On 15 January 1980, Xinzhuang was upgraded from an urban township to be a county-administered city of Taipei County.

[citation needed] The district is bordered by Wugu and Taishan to the north, Sanchong to the east, Banqiao and Shulin to the south, and Taoyuan City to the west.

[citation needed] The TRA section between Fuzhou and Shulin passes through Xinzhuang District, but no station is currently planned.