According to the postal code database, the postal code of Heshan District, Yiyang City, Hunan Province is 4 13002. The first two digits of 4 1 represent Hunan Province, the third digit 3 represents Yiyang City, the fourth digit 0 represents Heshan District, and the last two digits 02 represent specific delivery areas.

Heshan District is a municipal district under the jurisdiction of Yiyang City, Hunan Province, China, which is located in the north-central part of Hunan, next to Dongting Lake. The southwest of the region is the remnant vein of Xuefeng Mountain, and the highest point in Biyun Peak is 502 meters above sea level. The middle part of the ground fluctuates gently, and hills and plains alternate; The northeast is the lakeside plain, which is flat and open.

There are many departments and institutions in Heshan District, such as the People's Court of Heshan District of Yiyang City and the Human Resources and Social Security Bureau of Heshan District of Yiyang City, which are responsible for legal affairs and human resources in the jurisdiction.