Postal codes in Taiwan

Postal codes in Taiwan (Chinese: 郵遞區號; pinyin: Yóudì qūhào; Pe̍h-ōe-jī: Iû-tē khu-hō) is a system of three plus three (3+3) numeral digits used by Chunghwa Post, the government-owned postal service in Taiwan.^[1]

The first three digits of postal codes mainly correspond to the 368 townships, county-administered cities, and districts in Taiwan. However, the districts under the cities of Chiayi and Hsinchu share a single code. In addition, the published table includes 3 island entries in addition to administrative divisions: Tungsha (Pratas Island), Nansha (Spratly Islands), and Tiaoyutai (Senkaku Islands). These brings the total three digit postal codes in use to 368.

Omitting the supplementary three digits is ordinarily acceptable, especially for general public, while using a six-digit code is expected for corporate customers who send large-volume mails, which will speed the delivery of the mail.^[2]