| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Colonial Knob, Porirua | 5022 |
| Postal/ZIP Codes in Judgeford, Porirua | 5381 |
| Postal/ZIP Codes in Paekakariki Hill, Porirua | 5381 |
| Postal/ZIP Codes in Pauatahanui, Porirua | 5381 |
| Postal/ZIP Codes in Porirua, Porirua | 5010, 5022, 5024, 5026, 5028 |
| Postal/ZIP Codes in Pukerua Bay, Porirua | 5026 |