How do postal codes come about????? As the title suggests, thank you

It doesn't matter if the post is written wrong, as long as your address is easy to understand, you can send it, the zip code is convenient for the post office to find the area Zip code Zip code is a special code for postal communication to realize mail machine sorting, and it is a necessary tool to realize postal modernization, and the ultimate goal is to improve the speed and accuracy of your letters in the delivery process, so be sure to indicate the postal code when sending letters and packages. If you don't know the postal code of the other party (recipient), you can consult the postal code finder set up in the business room of the local post office or the postal business multi-computer query system, or you can inquire through the 11185 special service. In order to realize the automation of mail sorting and the digitization of the postal network, and speed up the delivery of mail, more than 40 countries in the world have successively implemented the postal code system, and use it as one of the standards to measure the level of a country's communication technology and postal services.

Postal code rules are not uniform across countries. Coding rules of China's postal code: China adopts a four-level six-digit coding system, the first two represent provinces, municipalities and autonomous regions, the third represents the postal district, the fourth represents the county and city, and the last two represent the post office, and the last two are on behalf of which delivery area of the city is delivered, that is, the location of the delivery area.

The third and fourth represent prefectures, cities, and prefectures. The fifth and sixth represent a county. A town or a neighborhood in which you live.

A postal code is a special code that represents the post office (office) where mail is delivered. It is also the communication code of residents and units within the scope of this bureau (office). The postal code consists of 6 Arabic numerals, such as 529000.

Its first two digits indicate Guangdong Province (autonomous region, municipality directly under the central government); The third digit indicates the zip code (Jiangmen); The fourth digit indicates the number of the city (county); The last two represent the mail delivery office and the office. Postal code 529000 indicates the delivery area of Jiangmen City, Guangdong Province.

A postal code is made up of six digits, with the first two digits representing the province or municipality and the first three digits representing the postal district; The first four digits represent provinces, postal districts, counties (cities); The last two digits indicate which delivery zone in the city was delivered from.

Postal code is a special code for postal communication to realize the sorting of mail machines, and it is a necessary tool to realize postal modernization, and the ultimate goal is to improve the speed and accuracy of your letters in the delivery process, so it is important to indicate the postal code when sending letters and parcels. To automate mail sorting and digitize the postal network to speed up mail delivery.

Postal code is a way of encoding for countries or regions to divide the whole country in order to achieve mail sorting automation and postal network digitization, and speed up mail delivery. The postal code system has become one of the standards for measuring the level of communication technology and postal services in a country. The postal code was first invented in Ukraine and introduced in December 1932, but it was abandoned in the third year and later adopted again in Germany.

Many countries or regions use numeric postal codes, but the United Kingdom and Canada also use a mix of romanized and numeric codes. Countries or regions that use numeric numbers also use different digits, such as the United States uses 5 or 9 digits, Mexico uses 5 digits, Australia uses 4 digits, and India uses 6 digits. The most complex encoding format is the United Kingdom.

Zip code usage. The zip code is a solution to automate the sorting of letters, because the computer cannot recognize Chinese, but it can recognize numbers. Each area is coded with **, which can be quickly sorted by computer, of course, the more detailed the writing, the better.