| Locality | Postal Code |
|---|---|
| Cuyuta, Masagua | 05019 |
| El Porvenir Ticanlu, Masagua | 05020 |
| Masagua, Masagua | 05005 |
| Obero, Masagua | 05014 |
| Postal Codes in Escuintla | |
|---|---|
| Tiquisate | Siquinalá |
| Santa Lucía Cotzumalguapa | San Vicente Pacaya |
| San José | Palín |
| Nueva Concepción | Masagua |
| La Gomera | La Democracia |
| Iztapa | Guanagazapa |
| Escuintla | |