330038。 According to the inquiry of Nanchang Government Affairs Network, the basic information of Gutan District shows that the postcode of Honggutan District, Nanchang City, Jiangxi Province is 330038. Honggutan District belongs to Nanchang City, Jiangxi Province. Located in the north-central part of Jiangxi Province, northwest of Nanchang City. It is the provincial administrative center of the province.