525253。 According to the query of official website 9 1 1, the postcode of Zhenjiang Town, Gaozhou City is 525253. Zhenjiang Town, belonging to Gaozhou City, Maoming City, Guangdong Province, is located in the southwest of Gaozhou City, bordering Shigu Town in the east, Ligang Town in Huazhou City in the south, Jianghu Town and Chen Lin Town in Huazhou City in the west, and shatian town in the north.