According to the postal code database, the postal code of the Human Resources and Social Security Bureau of Qiantang District, Hangzhou is 3 1000 1, with the first two digits 3 1 representing Zhejiang Province, the third digit 0 representing Hangzhou, the fourth digit 0 representing Shangcheng District, and the last two digits 0 1 representing Zhongshan Middle Road, No.250 Zhongshan Middle Road and No.266 Zhongshan Middle Road.