| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Kapar, Klang | 42200 |
| Postal/ZIP Codes in Klang, Klang | 41000, 41050, 41100, 41150, 41200, … |
| Postal/ZIP Codes in Pelabuhan Klang, Klang | 42000 |
| Postal/ZIP Codes in Pulau Indah, Klang | 42920 |
| Postal/ZIP Codes in Pulau Ketam, Klang | 42940 |