Our country adopts a four-level six-digit coding system. The first two digits represent the province (municipalities, autonomous regions), the third digit represents the postal area, the fourth represents the county (city), and the last two digits represent the city. Which delivery area in this city is delivered, that is, the location of the delivery area.

For example: the postal code "130021" and "13" represent Jilin Province, "00" represents the provincial capital Changchun, and "21" represents the delivery area.

Extended information:

1. Purpose of postal code

The postal code is implemented to realize the automation of letter sorting, because computers cannot recognize Chinese, but can recognize numbers. . By coding each area, you can quickly use a computer to sort. Of course, the more detailed the writing, the better.

2. Foreign postal codes

1. United States coding rules

Postal codes are a registered trademark of the United States Postal Service.

Zip codes are numbered with the first digit representing a U.S. state, the second and third digits together representing a region (perhaps a large city), and the fourth and fifth digits representing more specific area, such as a town or area of ??that city.

2. French coding rules

The French postal code began in 1972. It has 6 digits. The first two digits represent the province, and the last three digits represent the city, region or postal code respectively. branch.

3. Japanese coding rules

The new postal code system developed by Japan Post was put into use on February 2, 1998. The purpose of developing this system is to meet the needs of the increasingly expanding postal mechanization operations, improve operational efficiency, and at the same time ensure that stable, cheap and high-quality services are provided to users.

Baidu Encyclopedia - Postal Code

Baidu Encyclopedia - Postal Code Format