| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Cao Xanh, Quảng Ninh) | 202030, 202082 |
| Postal/ZIP Codes in Khu 1, Quảng Ninh) | 202031, 202034, 202035, 202036, 202037, … |
| Postal/ZIP Codes in Khu 2, Quảng Ninh) | 202032, 202049, 202050, 202051, 202052, … |
| Postal/ZIP Codes in Khu 3, Quảng Ninh) | 202033, 202063, 202064, 202065, 202066, … |
| Postal/ZIP Codes in Khu 4, Quảng Ninh) | 202083, 202084 |
| Postal/ZIP Codes in Khu 5, Quảng Ninh) | 202085, 202086, 202087, 202088, 202089, … |
| Postal/ZIP Codes in Khu 6, Quảng Ninh) | 202095, 202096 |
| Postal/ZIP Codes in Khu đô thị Cao Xanh, Quảng Ninh) | 202097 |