| Districts |
|---|
| Cirrí Sur, Naranjo |
| Naranjo, Naranjo |
| Palmitos, Naranjo |
| Rosario, Naranjo |
| San Jerónimo, Naranjo |
| San José, Naranjo |
| San Juan, Naranjo |
| San Miguel, Naranjo |
| Postleitzahlen in Alajuela |
|---|
| Alajuela |
| Atenas |
| Grecia |
| Guatuso |
| Los Chiles |
| Naranjo |
| Orotina |
| Palmares |
| Poás |
| San Carlos |
| San Mateo |
| San Ramón |
| Upala |
| Valverde Vega |
| Zarcero |