Postal code is a coding method that a country or region divides the whole country in order to realize the automation of mail sorting and the digitalization of postal network and speed up the delivery of mail. Postal coding system has become one of the standards to measure a country's communication technology and postal service level.
China postal code adopts four-level six-digit coding structure. The first two figures represent provinces (cities, autonomous regions); The first three digits indicate the postal area; The first four digits represent counties (cities); The last two digits indicate the delivery office.
Extended data:
Foreign postal codes
1, American coding rules: Zip code is a registered trademark of the US Postal Service. Zip codes use the first number to represent states in the United States, the second and third numbers together represent a region (possibly a big city), and the fourth and fifth numbers represent more specific regions.
2. French coding rules: the French postal code starts from 1972, with * * 6 digits, the first two digits represent provinces, and the last three digits represent cities, regions or post offices respectively.
3. The postal code of Russia consists of six digits, for example, the first three digits represent provinces or big cities, and the last three digits represent delivery post offices.
References:
Baidu encyclopedia-postal code