| Place | Post Code |
|---|---|
| Agbaluto, Romblon | 5500 |
| Agbudia, Romblon | 5500 |
| Agnaga, Romblon | 5500 |
| Agnay, Romblon | 5500 |
| Agnipa, Romblon | 5500 |
| Agpanabat, Romblon | 5500 |
| Agtongo, Romblon | 5500 |
| Alad, Romblon | 5500 |
| Bagacay, Romblon | 5500 |
| Barangay I, Romblon | 5500 |
| Barangay II, Romblon | 5500 |
| Barangay III, Romblon | 5500 |
| Barangay IV, Romblon | 5500 |
| Cajimos, Romblon | 5500 |
| Calabogo, Romblon | 5500 |
| Capaclan, Romblon | 5500 |
| Cobrador, Romblon | 5500 |
| Ginablan, Romblon | 5500 |
| Guimpingan, Romblon | 5500 |
| Ilauran, Romblon | 5500 |
| Lamao, Romblon | 5500 |
| Li-O, Romblon | 5500 |
| Logbon, Romblon | 5500 |
| Lonos, Romblon | 5500 |
| Lunas, Romblon | 5500 |
| Macalas, Romblon | 5500 |