The postcode of jiangkou county is 554400. Inquiring the People's Government Network of jiangkou county, Guizhou Province, we know that the postcode of jiangkou county, Guizhou Province is 554400. Jiangkou county, Guizhou Province belongs to tongren city, located in the northeast of Guizhou Province, on the slope of the transition from Guizhou Plateau to Xiangxi Hill. Fan Jing is a famous scenic spot in China, an AAAAA tourist attraction in China and one of the top ten famous summer resorts in China. In 20 16, jiangkou county was announced as the first batch of "National Global Tourism Demonstration Zone" by the National Tourism Administration.