According to Baidu Encyclopedia, Yishan Town belongs to Cangnan County, Wenzhou City, Zhejiang Province, and is located in the east of Cangnan County, with postal code of 325803 and telephone area code of 0577.

Postal code refers to postal code, which is a coding standard formulated by a country or region to realize the automation of mail sorting and the digitalization of postal network and speed up mail delivery.