According to official website information of Huazhou Municipal People's Government, the postcode of Huazhou City, Maoming City, Guangdong Province is 525 100. The first two digits 52 represent provinces, municipalities and autonomous regions, the third digit 5 represents postal areas, the fourth digit 1 represents cities or counties, and the last two digits 00 represent specific delivery areas. Therefore, the postcode of Huazhou City, Maoming City, Guangdong Province is 525 100.