4 13 100 Hunan province? Yiyang city? Yuanjiang city.

4 13000 Hunan province? Yiyang city? Ziyang district.

4 13000 Hunan province? Yiyang city? Heshan district.

4 13500 Hunan province? Yiyang city? Anhua county.

4 13200 Hunan province? Yiyang city? Nanxian county

Postal code components:

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 (office).

Countries all over the world have implemented the postal coding system one after another. As one of the standards to measure a country's communication technology and postal service level, the postal coding rules in different countries are not uniform.

Postal codes can help you narrow down quickly. The postal code of China is of little use (too wide) after reaching the district level, but it can still reach the city level. This function may not be obvious to domestic letters, but international letters are very useful.