| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Canaam, Viterbo | 177027 |
| Postal/ZIP Codes in El Granadillo, Viterbo | 177027 |
| Postal/ZIP Codes in El Porvenir, Viterbo | 177027 |
| Postal/ZIP Codes in Guayabito, Viterbo | 177027 |
| Postal/ZIP Codes in La Merced, Viterbo | 177027 |
| Postal/ZIP Codes in Playa Rica, Viterbo | 177027 |
| Postal/ZIP Codes in Viterbo, Viterbo | 177020 |