3320 is the Postal Code/ZIP Code for the of San Luis de la Reina in the El Salvador Department of San Miguel and the Municipality of San Luis de la Reina.
| Postal Code | 3320 |
| Postal Code Name | San Luis de la Reina |
| Department | San Miguel Department |
| Municipality | San Luis de la Reina Municipality |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 3302 3303 3318 3323 |