3 1 1 10 1。 According to the information in China Postal Code Library, Hangzhou is located in Zhejiang Province, and the postcode of Qiaosi Street, Linping District, Hangzhou City is 31101. China postal code adopts four-level six-digit coding structure, and the first two digits 3 1 represent Zhejiang Province. The third digit 1 stands for Hangzhou; The fourth digit 1 stands for linping city; The last two digits 0 1 indicate the delivery office.