10311 is the Postal Code/ZIP Code for the District of San Rafael Abajo in the Costa Rica Province of San José and the Canton of Desamparados. The neighborhoods of Autofores, Balboa, Barrio Higuerones, Barrio Los Ángeles, Barrio Treviso, Barrio Vizcaya, Cerro Bonito, Coopelot, El Tejar, Gardenia, Mónaco, Residencias Unidas, Santa Cecilia and Valencia are located in Postal Code 10311.
| Postal Code | 10311 |
| Postal Code Name | San Rafael Abajo |
| Province | San José Province |
| Canton | Desamparados Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 10111 10301 10303 10304 11004 |