| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | area code |
|---|---|---|---|---|---|---|---|---|
| 23010 | Colorina | SO | Lombardy | 0342 | C903 | Colorina SO - Lombardy | 0342 | |
| 23013 | Cosio Valtellino | SO | Lombardy | 0342 | D088 | Cosio Valtellino SO - Lombardy | 0342 | |
| 23010 | Dazio | SO | Lombardy | 0342 | D258 | Dazio SO - Lombardy | 0342 | |
| 23014 | Delebio | SO | Lombardy | 0342 | D266 | Delebio SO - Lombardy | 0342 | |
| 23015 | Dubino | SO | Lombardy | 0342 | D377 | Dubino SO - Lombardy | 0342 | |
| 23020 | Faedo Valtellino | SO | Lombardy | 0342 | D456 | Faedo Valtellino SO - Lombardy | 0342 | |
| 23010 | Forcola | SO | Lombardy | 0342 | D694 | Forcola SO - Lombardy | 0342 | |
| 23010 | Fusine | SO | Lombardy | 0342 | D830 | Fusine SO - Lombardy | 0342 | |
| 23010 | Gerola Alta | SO | Lombardy | 0342 | D990 | Gerola Alta SO - Lombardy | 0342 | |
| 23033 | Grosio | SO | Lombardy | 0342 | E200 | Grosio SO - Lombardy | 0342 |