| Place | Post Code |
|---|---|
| Alaska, Rivas | 11904 |
| Altamira, Rivas | 11904 |
| Alto Jaular, Rivas | 11904 |
| Angeles, Rivas | 11904 |
| Boquete, Rivas | 11904 |
| Buenavista, Rivas | 11904 |
| Canaán, Rivas | 11904 |
| Chimirol, Rivas | 11904 |
| Chispa, Rivas | 11904 |
| Chuma, Rivas | 11904 |
| División, Rivas | 11904 |
| Guadalupe, Rivas | 11904 |
| Herradura, Rivas | 11904 |
| Linda Vista, Rivas | 11904 |
| Los Monges, Rivas | 11904 |
| Lourdes, Rivas | 11904 |
| Monterrey, Rivas | 11904 |
| Palmital, Rivas | 11904 |
| Piedra Alta, Rivas | 11904 |
| Playa Quesada, Rivas | 11904 |
| Playas, Rivas | 11904 |
| Pueblo Nuevo, Rivas | 11904 |
| Río Blanco, Rivas | 11904 |
| Rivas, Rivas | 11904 |
| San Antonio, Rivas | 11904 |
| San Gerardo, Rivas | 11904 |