Gansu Province
| City | Zipcode | Area Code |
| Baiyin | 730900 | 943 |
| Dunhuang | 736200 | 937 |
| Jiayuguan | 735100 | 937 |
| Jinchang | 737100 | 935 |
| Jiuquan | 735000 | 937 |
| Lanzhou | 730000 | 931 |
| Linxia | 731100 | 930 |
| Pingliang | 744000 | 933 |
| Tianshui | 741000 | 938 |
| Wuwei | 733000 | 935 |
| Xifeng | 745000 | 934 |
| Yumen | 735200 | 937 |
| Zhangye | 734000 | 936 |
