21304 is the Postal Code/ZIP Code for the District of Bijagua in the Costa Rica Province of Alajuela and the Canton of Upala. The neighborhoods of Achiote, Altamira, Barrio El Retiro, Carlos Vargas, Cuesta Los Pichardo, La Rejoya, Los Chorros, Los Ángeles and Santo Domingo are located in Postal Code 21304.
| Postal Code | 21304 |
| Postal Code Name | Bijagua |
| Province | Alajuela Province |
| Canton | Upala Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 21301 21302 21308 21504 50402 50404 50602 |