20403 is the Postal Code/ZIP Code for the District of Jesús María in the Costa Rica Province of Alajuela and the Canton of San Mateo.
| Postal Code | 20403 |
| Postal Code Name | Jesús María |
| Province | Alajuela Province |
| Canton | San Mateo Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 20401 20404 20905 60204 |