20606 is the Postal Code/ZIP Code for the District of San Juan in the Costa Rica Province of Alajuela and the Canton of Naranjo. The neighborhoods of Alto Palmas, Bajo Murciélago, Cueva, Guarumal, Rincón Elizondo, San Antonio and Yoses are located in Postal Code 20606.
| Postal Code | 20606 |
| Postal Code Name | San Juan |
| Province | Alajuela Province |
| Canton | Naranjo Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 20211 20601 20603 20608 |