1603 is the Postal Code/ZIP Code for the of Cuyultitán in the El Salvador Department of La Paz and the Municipality of Cuyultitán.
| Postal Code | 1603 |
| Postal Code Name | Cuyultitán |
| Department | La Paz Department |
| Municipality | Cuyultitán Municipality |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 1608 1612 1614 1623 |