| Place | Post Code |
|---|---|
| Banquero, Reina Mercedes | 3303 |
| Binarsang, Reina Mercedes | 3303 |
| Cutog Grande, Reina Mercedes | 3303 |
| Cutog Pequeño, Reina Mercedes | 3303 |
| Dangan, Reina Mercedes | 3303 |
| District I, Reina Mercedes | 3303 |
| District II, Reina Mercedes | 3303 |
| Labinab Grande, Reina Mercedes | 3303 |
| Labinab Pequeño, Reina Mercedes | 3303 |
| Mallalatang Grande, Reina Mercedes | 3303 |
| Mallalatang Tunggui, Reina Mercedes | 3303 |
| Napaccu Grande, Reina Mercedes | 3303 |
| Napaccu Pequeño, Reina Mercedes | 3303 |
| Salucong, Reina Mercedes | 3303 |
| Santiago, Reina Mercedes | 3303 |
| Santor, Reina Mercedes | 3303 |
| Sinippil, Reina Mercedes | 3303 |
| Tallungan, Reina Mercedes | 3303 |
| Turod, Reina Mercedes | 3303 |
| Villador, Reina Mercedes | 3303 |