I am going to answer another very simple question about Shanghai Postal Code.
This seems simple, but it is not easy to directly get the postal code from street address. There are so many postal code in Shanghai, one for each area.
China postal code is always 6 digits. Shanghai starts from 20xxxx.
Shanghai downtown: 200000
Shanghai County: 201100
Jiading District 嘉定: 201800
Songjiang District 松江: 201600
Nanhui District 南汇: 201300
Fengxian District 奉贤: 201400
Chuanshan District 川沙: 201200
Qingpu District 青浦: 201700
Chongming District 崇明: 202100
Jinshan District: 金山 201500
In Shanghai downtown, at least I know Huangpu area is 200000, and Xujiahui is 200030, and Liuli area in Pudong is 200125…
If you know the street address, you may want to try your luck with Google Maps. Enter your address, and you may find some clue in the search result.