Postal codes () in Taiwan is a system of five digit codes used by Chunghwa Post for postal service in the Republic of China. There are 368 sets of three-digit codes for townships, county-controlled cities, districts (cities of Chiayi and Hsinchu have a single code covering all its districts) in Taiwan, and the uninhabited island groups of Dongsha (Pratas), Nansha (Spratly), and Diaoyutai (Senkaku) (currently controlled by Japan). There are also codes for Kinmen and Matsu, the parts of Fujian Province controlled by the Republic of China. 