1620 is the Postal Code/ZIP Code for the of San Rafael Obrajuelo in the El Salvador Department of La Paz and the Municipality of San Rafael Obrajuelo.
| Postal Code | 1620 |
| Postal Code Name | San Rafael Obrajuelo |
| Department | La Paz Department |
| Municipality | San Rafael Obrajuelo Municipality |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 1613 1622 |