| Ort | Postleitzahl |
|---|---|
| Aklan Village, Diffun | 3401 |
| Andres Bonifacio, Diffun | 3401 |
| Aurora East, Diffun | 3401 |
| Aurora West, Diffun | 3401 |
| Baguio Village, Diffun | 3401 |
| Balagbag, Diffun | 3401 |
| Bannawag, Diffun | 3401 |
| Cajel, Diffun | 3401 |
| Campamento, Diffun | 3401 |
| Diego Silang, Diffun | 3401 |
| Don Faustino Pagaduan, Diffun | 3401 |
| Don Mariano Perez, Sr., Diffun | 3401 |
| Doña Imelda, Diffun | 3401 |
| Dumanisi, Diffun | 3401 |
| Gabriela Silang, Diffun | 3401 |
| Gregorio Pimentel, Diffun | 3401 |
| Gulac, Diffun | 3401 |
| Guribang, Diffun | 3401 |
| Ifugao Village, Diffun | 3401 |
| Isidro Paredes, Diffun | 3401 |
| Liwayway, Diffun | 3401 |
| Luttuad, Diffun | 3401 |
| Magsaysay, Diffun | 3401 |
| Makate, Diffun | 3401 |
| Maria Clara, Diffun | 3401 |
| Rafael Palma, Diffun | 3401 |
| Postleitzahlen in Quirino | |
|---|---|
| Aglipay, Quirino | |
| Cabarroguis, Quirino | |
| Diffun, Quirino | |
| Maddela, Quirino | |
| Nagtipunan, Quirino | |
| Saguday, Quirino | |