20 — 71 codes dans 59 localités (Costa Rica).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Alajuela | Alajuela · Provincia de Alajuela | 10.0241, -84.2061 | |
| San José | San José · Alajuela | 10.0075, -84.2475 | |
| Carrizal | Carrizal · Alajuela | 10.0856, -84.1742 | |
| San Antonio | San Antonio · Alajuela | 9.9894, -84.2443 | |
| Guácima | Guácima · Alajuela | 9.9593, -84.2606 | |
| San Isidro | San Isidro · Alajuela | 10.0882, -84.1937 | |
| Sabanilla | Sabanilla · Alajuela | 10.0732, -84.2143 | |
| San Rafael | San Rafael · Alajuela | 9.9598, -84.2278 | |
| Río Segundo | Río Segundo · Alajuela | 10.0003, -84.1951 | |
| Desamparados | Desamparados · Alajuela | 10.0275, -84.185 | |
| Turrúcares | Turrúcares · Alajuela | 9.9441, -84.3253 | |
| Tambor | Tambor · Alajuela | 10.0281, -84.2573 | |
| Garita | Garita · Alajuela | 9.9875, -84.3035 | |
| Sarapiquí | Sarapiquí · Alajuela | 10.2655, -84.1878 | |
| San Ramón | San Ramón · Provincia de Alajuela | 10.0873, -84.4699 | |
| Santiago | Santiago · San Ramón | 10.0384, -84.5285 | |
| San Juan | San Juan · San Ramón | 10.1061, -84.4622 | |
| Piedades Norte | Piedades Norte · San Ramón | 10.1473, -84.5373 | |
| Piedades Sur | Piedades Sur · San Ramón | 10.0942, -84.5738 | |
| San Rafael | San Rafael · San Ramón | 10.0267, -84.4748 | |
| San Isidro | San Isidro · San Ramón | 10.0869, -84.4501 | |
| Ángeles | Ángeles · San Ramón | 10.2521, -84.5929 | |
| Alfaro | Alfaro · San Ramón | 10.0885, -84.503 | |
| Volio | Volio · San Ramón | 10.1509, -84.4526 | |
| Concepción | Concepción · San Ramón | 10.1279, -84.436 | |
| Zapotal | Zapotal · San Ramón | 10.1445, -84.6379 | |
| Peñas Blancas | Peñas Blancas · San Ramón | 10.3787, -84.6787 | |
| Grecia | Grecia · Provincia de Alajuela | 10.0697, -84.3131 | |
| San Isidro | San Isidro · Grecia | 10.1245, -84.2683 | |
| San José | San José · Grecia | 10.0887, -84.2758 | |
| San Roque | San Roque · Grecia | 10.1229, -84.2876 | |
| Tacares | Tacares · Grecia | 10.0276, -84.3094 | |
| Río Cuarto | Río Cuarto · Grecia | 10.4085, -84.2094 | |
| Puente de Piedra | Puente de Piedra · Grecia | 10.0354, -84.3358 | |
| Bolívar | Bolívar · Grecia | 10.1363, -84.2983 | |
| San Mateo | San Mateo · Provincia de Alajuela | 9.9669, -84.5313 | |
| Desmonte | Desmonte · San Mateo | 9.9656, -84.4766 | |
| Jesús María | Jesús María · San Mateo | 9.9452, -84.6097 | |
| Atenas | Atenas · Provincia de Alajuela | 9.9808, -84.3696 | |
| Jesús | Jesús · Atenas | 9.97, -84.4342 | |
| Mercedes | Mercedes · Atenas | 9.9867, -84.3994 | |
| San Isidro | San Isidro · Atenas | 9.9955, -84.4332 | |
| Concepción | Concepción · Atenas | 9.9538, -84.3714 | |
| San José | San José · Atenas | 10.0146, -84.4042 | |
| Santa Eulalia | Santa Eulalia · Atenas | 10.0149, -84.3753 | |
| Escobal | Escobal · Atenas | 9.9442, -84.4241 | |
| Naranjo | Naranjo · Provincia de Alajuela | 10.101, -84.3908 | |
| San Miguel | San Miguel · Naranjo | 10.0714, -84.395 | |
| San José | San José · Naranjo | 10.1517, -84.4044 | |
| Cirrí Sur | Cirrí Sur · Naranjo | 10.1524, -84.3657 | |
| San Jerónimo | San Jerónimo · Naranjo | 10.1241, -84.355 | |
| San Juan | San Juan · Naranjo | 10.1198, -84.4155 | |
| El Rosario | El Rosario · Naranjo | 10.0488, -84.3783 | |
| Palmitos | Palmitos · Naranjo | 10.0973, -84.4248 | |
| Palmares | Palmares · Provincia de Alajuela | 10.0541, -84.4329 | |
| Zaragoza | Zaragoza · Palmares | 10.0375, -84.4438 | |
| Buenos Aires | Buenos Aires · Palmares | 10.0719, -84.4347 | |
| Santiago | Santiago · Palmares | 10.021, -84.4473 | |
| Candelaria | Candelaria · Palmares | 10.0283, -84.4231 | |
| Esquipulas | Esquipulas · Palmares | 10.0585, -84.4185 | |
| La Granja | La Granja · Palmares | 10.0527, -84.4492 | |
| San Pedro | San Pedro · Poás | 10.0775, -84.2453 | |
| San Juan | San Juan · Poás | 10.1333, -84.2357 | |
| San Rafael | San Rafael · Poás | 10.0985, -84.2578 | |
| Carrillos | Carrillos · Poás | 10.0363, -84.2732 | |
| Sabana Redonda | Sabana Redonda · Poás | 10.1427, -84.2144 | |
| Orotina | Orotina · Provincia de Alajuela | 9.904, -84.5274 | |
| El Mastate | El Mastate · Orotina | 9.9164, -84.5593 | |
| Hacienda Vieja | Hacienda Vieja · Orotina | 9.9261, -84.4882 | |
| Coyolar | Coyolar · Orotina | 9.8711, -84.5731 | |
| La Ceiba | La Ceiba · Orotina | 9.8975, -84.6268 |