20304 is the Postal Code/ZIP Code for the District of San Roque in the Costa Rica Province of Alajuela and the Canton of Grecia. The neighborhoods of Agualote, Bajo Sapera, Cabuyal, Carbonal, Carbonal Arriba, Casillas, Coyotera, Higuerones, Latino, León Cortés Castro, Peter, San Miguel and San Miguel Arriba are located in Postal Code 20304.
| Postal Code | 20304 |
| Postal Code Name | San Roque |
| Province | Alajuela Province |
| Canton | Grecia Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 20301 20302 20307 20308 20607 21202 21203 |