Hsinchu County is a county administered as part of the nominal Taiwan Province of the Republic of China (ROC). Located in north-western Taiwan, the population of the county is mainly Hakka; with a Taiwanese aboriginal minority in the southeastern part of the county. Zhubei is the county seat, where the government office and county office is located. A portion of the Hsinchu Science Park is located in Hsinchu County.

Taiwan Province is a de jure administrative division of the Republic of China (ROC). Provinces remain a titular division as a part of the Constitution of the Republic of China, but are no longer considered to have any administrative function practically.