3 15327。 According to the postal code database, the postal code of Andong Town, Cixi City, Ningbo City, Zhejiang Province is 3 15327. Andong Town is a town under the jurisdiction of Cixi City, Ningbo City, Zhejiang Province. Located on the south bank of Hangzhou Bay, it borders Chongshou Town in the east, zhouxiang town and Changhe Town in the west, Han Zong Street in the south and pinghu city and Haiyan County in Jiaxing across Hangzhou Bay in the north.