11004 is the Postal Code/ZIP Code for the District of Concepción in the Costa Rica Province of San José and the Canton of Alajuelita. The neighborhoods of Barrio Boca del Monte, Barrio Once de Abril, Chirivico, El Progreso, Jardín, Los Almendros, Los Itabos, Monte Alto, Vista Real and Vista de San José are located in Postal Code 11004.
| Postal Code | 11004 |
| Postal Code Name | Concepción |
| Province | San José Province |
| Canton | Alajuelita Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 10111 10303 10311 11001 11002 11003 |