Legislative Yuan constituencies in Hsinchu County

Hsinchu County electoral constituencies consist of 2 single-member constituencies, each represented by a member of the Republic of China Legislative Yuan. From the 2020 legislative election onwards, the number of Hsinchu County's seats was increased to 2 due to the county's increase in population, as it exceeded the 315,019 average for each constituency.

Current constituencies

 * Hsinchu County Constituency I - Xinfeng, Hukou, Xinpu, Qionglin, Guanxi, Jianshi Townships, Zhubei City (12 villages)
 * Hsinchu County Constituency II - Zhudong, Hengshan, Baoshan, Beipu, Emei, Wufeng Townships, Zhubei City (19 villages)

2008-2016

 * Hsinchu County Constituency

Legislators
Chiu Ching-chun resigned in 2009 after his election as Hsinchu County magistrate.