20604 is the Postal Code/ZIP Code for the District of Cirrí Sur in the Costa Rica Province of Alajuela and the Canton of Naranjo. The neighborhoods of Bajo Arrieta, Bajo Valverde, Bajo Zúñiga, El Cruce, Isla Cocora, Llano Bonito, Lourdes, Quebrada Honda, Rincón and Zapote are located in Postal Code 20604.
| Postal Code | 20604 |
| Postal Code Name | Cirrí Sur |
| Province | Alajuela Province |
| Canton | Naranjo Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 20601 20603 20605 21101 21105 |