12006 is the Postal Code/ZIP Code for the District of San Antonio in the Costa Rica Province of San José and the Canton of León Cortés Castro.
| Postal Code | 12006 |
| Postal Code Name | San Antonio |
| Province | San José Province |
| Canton | León Cortés Castro Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 10306 12001 12002 12005 |