| Place | Post Code |
|---|---|
| Arenal, Arenal | 50807 |
| Mata de Caña, Arenal | 50807 |
| Sangregado, Arenal | 50807 |
| Unión, Arenal | 50807 |
| All postal codes in Tilarán | |
|---|---|
| Arenal, Tilarán | |
| Líbano, Tilarán | |
| Quebrada Grande, Tilarán | |
| Santa Rosa, Tilarán | |
| Tierras Morenas, Tilarán | |
| Tilarán, Tilarán | |
| Tronadora, Tilarán | |