| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Baiyer, Mul-Baiyer | |
| Postal/ZIP Codes in Lumusa, Mul-Baiyer | |
| Postal/ZIP Codes in Mul, Mul-Baiyer |
| Postal Codes in Western Highlands | |
|---|---|
| Postal/ZIP Codes in Tambul-Nebilyer | Postal/ZIP Codes in Mul-Baiyer |
| Postal/ZIP Codes in Mount Hagen | Postal/ZIP Codes in Dei |