Household Registration Act Article 5

The municipal and the county (city) governments shall establish Household Registration Offices to deal with household registrations in the area under the individual Office’s jurisdiction.
中文原文 戶籍法第5條
戶籍登記,由直轄市、縣(市)主管機關於其轄區內分設戶政事務所辦理。

English translation for reference only; the Chinese text prevails. Not legal advice.