10304 is the Postal Code/ZIP Code for the District of San Rafael Arriba in the Costa Rica Province of San José and the Canton of Desamparados. The neighborhoods of Alpino, Barrio Lajas, Berlay, El Bambú, Juncales, La Guaria, Macarena, Maiquetía and Méndez are located in Postal Code 10304.
| Postal Code | 10304 |
| Postal Code Name | San Rafael Arriba |
| Province | San José Province |
| Canton | Desamparados Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 10301 10302 10303 10311 10601 10607 |