| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Refugio Vialidad, San Carlos | M5569 XBF |
| Postal/ZIP Codes in Rincón Huaiquerías, San Carlos | M5569 XBG |
| Postal/ZIP Codes in Rivas, San Carlos | M5569 XGZ |
| Postal/ZIP Codes in S Estrella, San Carlos | M5569 XHA |
| Postal/ZIP Codes in San Carlos, San Carlos | M5512 |
| Postal/ZIP Codes in Tierras Blancas, San Carlos | M5569 XAC |
| Postal/ZIP Codes in Tres Banderas, San Carlos | M5517 XAF |
| Postal/ZIP Codes in Tres Esquinas, San Carlos | M5514 |
| Postal/ZIP Codes in Vega de Praso, San Carlos | M5569 XHC |
| Postal/ZIP Codes in Vegas de Las Ovejas, San Carlos | M5569 XHD |
| Postal/ZIP Codes in Viuda de Satelo, San Carlos | M5569 XHB |
| Postal/ZIP Codes in Volcán Maipú, San Carlos | M5569 XHE |