Provinces of China
Provincial-level administrative divisions () or first-level administrative divisions (), are the highest-level Chinese administrative divisions. There are 34 such divisions, classified as 23 provinces (), four municipalities, five autonomous regions, and two Special Administrative Regions. All but Taiwan Province and a small fraction of Fujian Province (currently administered by the Republic of China) are controlled by the People's Republic of China.
List of postal codes in China
China Post uses a six-digit all-numerical system with four tiers: the first tier, composed of the first two digits, show the province, province-equivalent municipality, or autonomous region; the second tier, composed of the third digit, shows the postal zone within the province, municipality or autonomous region; the fourth digit serves as the third tier, which shows the postal office within prefectures or prefecture-level cities; the last two digits are the fourth tier, which indicates the specific mailing area for delivery.