| Place | Post Code |
|---|---|
| Almendros, Concepción | 11004 |
| Boca del Monte, Concepción | 11004 |
| Chirivico, Concepción | 11004 |
| Concepción, Concepción | 11004 |
| Monte Alto, Concepción | 11004 |
| Once de Abril, Concepción | 11004 |
| Progreso, Concepción | 11004 |
| Tejar, Concepción | 11004 |
| Vista de San José, Concepción | 11004 |
| Vista Real, Concepción | 11004 |
| All postal codes in Alajuelita | |
|---|---|
| Alajuelita, Alajuelita | |
| Concepción, Alajuelita | |
| San Antonio, Alajuelita | |
| San Felipe, Alajuelita | |
| San Josecito, Alajuelita | |