At present, China's postal code is 6 digits, and the implemented rule is called "four levels and six codes". That is to say, the zip code is a total of 6 digits, the first 2 digits represent the province, the 3rd digit represents the postal area (the network organization unit within the post, similar to the administrative "prefecture-level city"), the 3rd digit represents the postal area. The 4-digit number represents the county (city) post office, and the last two numbers represent the delivery office (the township branch office or a certain delivery area in the urban area).
A full 6-digit zip code can be pinpointed to the delivery area of a borough, making it easier for couriers to deliver packages. Here's an example of a country's postal code:
Take the zip code 324115 as an example, 32 represents Zhejiang Province (both 31 and 32 represent Zhejiang Province), 324 represents Quzhou Post Office (the third-level postal district central office), and 3241 represents Jiangshan City (a county-level city under the jurisdiction of Quzhou). City), 324115 indicates the scope of Fenglin Town, Jiangshan City (the area served by the former Maoban Post Office roughly overlaps with the administrative division of Fenglin Town)
After the mail arrives in this area, it will be identified by the staff for delivery. However, with the decline of the mailing business, few people send letters, and the usage rate of zip codes is not high. In addition, the post office is also opening the express service. Generally, important documents (such as ID cards, passports, etc.) will be sent by EMS express (express).
This postal code system is still used internally by the post office. One is that it is stipulated by the state, and the other is that the post office covers the whole country. There are machines inside the post office to identify letter addresses, which can identify postal codes and addresses on letters.
If you are sending a letter, you must write the zip code correctly, which can improve the processing efficiency within the post office, otherwise they will repeat the sorting again, wasting time and increasing labor costs.