| Place | Post Code |
|---|---|
| Amungan, Iba | 2201 |
| Bangantalinga, Iba | 2201 |
| Dirita-Baloguen, Iba | 2201 |
| Lipay-Dingin-Panibuatan, Iba | 2201 |
| Palanginan, Iba | 2201 |
| San Agustin, Iba | 2201 |
| Santa Barbara, Iba | 2201 |
| Santo Rosario, Iba | 2201 |
| Zone 1, Iba | 2201 |
| Zone 1 Poblacion, Iba | 2201 |
| Zone 2, Iba | 2201 |
| Zone 2 Poblacion, Iba | 2201 |
| Zone 3, Iba | 2201 |
| Zone 3 Poblacion, Iba | 2201 |
| Zone 4, Iba | 2201 |
| Zone 4 Poblacion, Iba | 2201 |
| Zone 5, Iba | 2201 |
| Zone 5 Poblacion, Iba | 2201 |
| Zone 6, Iba | 2201 |
| Zone 6 Poblacion, Iba | 2201 |