| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Bustamante, Coihueco | 3870000 |
| Postal/ZIP Codes in Coihueco, Coihueco | 3870000 |
| Postal/ZIP Codes in Minas Del Prado, Coihueco | 3870000 |
| Postal/ZIP Codes in San Antonio De Cato, Coihueco | 3870000 |
| Postal/ZIP Codes in Talquipén, Coihueco | 3870000 |