| City/County | Telephone Area Coce | Postcode |
| Haerbin | 0451 | 150000 | Acheng | 0450 | 150300 |
| Qiqihaer | 0452 | 161000 |
| Mudanjiang | 0453 | 157000 |
| Jiamusi | 0454 | 154000 |
| Suihua | 0455 | 152000 |
| Heihe | 0456 | 164300 |
| Yichun | 0458 | 153000 |
| Fujin | 0459 | 156100 |
| Daqing | 04610 | 163000 |
| Shuangcheng | 04615 | 150100 |
| Zhaodong | 04616 | 151100 |
| Jixi | 04617 | 158100 |
| Muling | 04634 | 157500 |
| Anda | 04653 | 151400 |