54 100 1。 According to the website information of Postal Code Library, Xiufeng District of Guilin City is located in Guangxi Zhuang Autonomous Region, and its postal code is 54 100 1. Among them, the first two digits 54 represent Guangxi Province, the third digit 1 represents the postal Zhuang Autonomous Region, the fourth digit 0 represents Xiufeng District, and the last two digits 0 1 represent the specific delivery area. So the postcode of Xiufeng District, Guilin City is 54 100 1.