30109 is the Postal Code/ZIP Code for the District of Dulce Nombre in the Costa Rica Province of Cartago and the Canton of Cartago.
| Postal Code | 30109 |
| Postal Code Name | Dulce Nombre |
| Province | Cartago Province |
| Canton | Cartago Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 11703 30101 30105 30201 30203 30205 30701 |