| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Coltauco, Coltauco | 3000000 |
| Postal/ZIP Codes in Doñihue, Coltauco | 3000000 |
| Postal/ZIP Codes in Lo De Cuevas, Coltauco | 3000000 |
| Postal/ZIP Codes in Loreto - Molino, Coltauco | 3000000 |
| Postal/ZIP Codes in Purén, Coltauco | 3000000 |
| Postal/ZIP Codes in Rinconada De Parral, Coltauco | 3000000 |