Postal code of Jiangbei District, Chongqing City

The postcode of Jiangbei District, Chongqing is 400020.

The first two digits of 40 represent provinces, municipalities and autonomous regions, the third digit 0 represents postal areas, the fourth digit 0 represents counties and cities, and the last two digits of 20 represent specific delivery areas. Jiangbei District, which belongs to Chongqing, is one of the core areas of Chongqing's main urban area. Located in the north of the Yangtze River and Jialing River, it is distributed in strips from west to east. 1955, the division of Chongqing was adjusted and renamed Jiangbei District.

Jiangbei District is located in the parallel ridge and valley area of eastern Sichuan, with S-shaped strip distribution along the river, surrounded by rivers on three sides in the southwest and east, and the terrain is high in the northeast and low in the southwest. The territory is dominated by red hills, which can be divided into three types: hills, valleys and terraces. Restricted by the parallel ravines in eastern Sichuan, three long and narrow mountains are formed, which extend from north to south in parallel, forming three barriers from east to west.

The function of postal code

1. Through postal code, the post office can sort and classify the mail according to a certain system, thus greatly saving manpower and time in the mail delivery process. The use of postal code not only reduces the possibility of human error, but also significantly improves the delivery speed of mail and ensures people to receive letters quickly.

2. It can provide the function of address identification and location: the design and distribution of postal codes are based on the actual situation of cities and regions, so postal codes can accurately and uniquely identify an address through a series of numbers. This accuracy and uniqueness are very important for various online shopping platforms, express delivery companies and other enterprises and institutions that need mail services.

3. It can provide convenience for statistics and data analysis: the postal code system can also provide important statistical data for municipal, commercial and academic research fields. By counting the mail receiving and dispatching in postal code areas, people can know the quantity, frequency and nature of mail in different areas, thus providing data support for policy making, business decision-making and academic research.

The above contents refer to Baidu Encyclopedia-Jiangbei District.