| Place | Post Code |
|---|---|
| Benit, San Ricardo | 6617 |
| Bitoon, San Ricardo | 6617 |
| Cabutan, San Ricardo | 6617 |
| Camang, San Ricardo | 6617 |
| Esperanza, San Ricardo | 6617 |
| Esperanza Dos, San Ricardo | 6617 |
| Inolinan, San Ricardo | 6617 |
| Kinachawa, San Ricardo | 6617 |
| Looc, San Ricardo | 6617 |
| Pinut-An, San Ricardo | 6617 |
| Poblacion, San Ricardo | 6617 |
| San Antonio, San Ricardo | 6617 |
| San Ramon, San Ricardo | 6617 |
| Saub, San Ricardo | 6617 |
| Timba, San Ricardo | 6617 |