| Postal Code information | |
|---|---|
| Place | Hải Đông |
| Post Code | 428821, 428822, 428823, 428824, 428825, 428826, 428827, 428828, 428829, 428830, 428831, 428832, 428833, 428834, 428835, 428836, 428837 |
| County | Hải Đông |
| State | Đồng Bằng Sông Hồng |
| Time zone | Asia/Ho_Chi_Minh |