| Locality | Postal Code |
|---|---|
| Candelaria, San Cayetano Istepeque | 01704 |
| Las Minas, San Cayetano Istepeque | 01704 |
| San Cayetano Istepeque, San Cayetano Istepeque | 01704 |
| Santa Lucía, San Cayetano Istepeque | 01704 |
| Postal Codes in San Vicente | |
|---|---|
| Verapaz | Tepetitán |
| Tecoluca | Santo Domingo |
| Santa Clara | San Vicente |
| San Sebastián | San Lorenzo |
| San Ildefonso | San Esteban Catarina |
| San Cayetano Istepeque | Guadalupe |
| Apastepeque | |