2-digit postcode areas China (defined through the first two postcode digits)
Postal codes (邮政编码 or 邮编/郵政編碼 or 郵編; Pinyin: yóuzhèng biānmǎ or yóuzhèng) in the People's Republic of China are a numeric six-digit system for the whole country.
The first two digits show the province, province-equivalent municipality, or autonomous region; the third digit the postal zone; the fourth digit the prefectures or prefecture-level city; the last two digits the delivery post office.
Hong Kong and Macau, which have their own postal systems, have Chinese postcodes. However, they are not widely used.
Partial list (provincial capitals, municipalities, sub-provincial cities):