| Districts |
|---|
| Brisas, Zarcero |
| Guadalupe, Zarcero |
| Laguna, Zarcero |
| Palmira, Zarcero |
| Tapezco, Zarcero |
| Zapote, Zarcero |
| Zarcero, Zarcero |
| All postal codes in Alajuela |
|---|
| Alajuela |
| Atenas |
| Grecia |
| Guatuso |
| Los Chiles |
| Naranjo |
| Orotina |
| Palmares |
| Poás |
| San Carlos |
| San Mateo |
| San Ramón |
| Upala |
| Valverde Vega |
| Zarcero |