| Municipalities |
|---|
| Postal/ZIP Codes in Villaviciosa, Abra |
| Postal/ZIP Codes in Cordillera Administrative Region |
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| Postal/ZIP Codes in Abra |
| Postal/ZIP Codes in Apayao |
| Postal/ZIP Codes in Benguet |
| Postal/ZIP Codes in Ifugao |
| Postal/ZIP Codes in Kalinga |
| Postal/ZIP Codes in Mountain Province |