What are the postal codes of provinces in China?

History of postal codes

Postal codes originated in Britain. In the early 1950s, Britain began to study postal codes, and it was tried out in Norich postal area on 1959, which attracted the attention of many countries.

Subsequently, the United States, Britain, France, Australia, Switzerland and other countries have successively implemented it throughout the country. After 1965, with the wide application of machinery and equipment, the advantages of postal codes are more obvious, so Japan, Italy, Canada, the Netherlands and Sweden have successively implemented postal codes. Since 1988, more than 50 countries and regions in the world have implemented the postal code system.

Refer to the above? Baidu Encyclopedia-Zip Code