| Postal Code information | |
|---|---|
| Place | Hải Long |
| Post Code | 428541, 428542, 428543, 428544, 428545, 428546, 428547, 428548, 428549, 428550, 428551, 428552, 428553, 428554, 428555, 428556, 428557 |
| County | Hải Long |
| State | Đồng Bằng Sông Hồng |
| Time zone | Asia/Ho_Chi_Minh |