| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | area code |
|---|---|---|---|---|---|---|---|---|
| 23010 | Piantedo | SO | Lombardy | 0342 | G572 | Piantedo SO - Lombardy | 0342 | |
| 23020 | Piateda | SO | Lombardy | 0342 | G576 | Piateda SO - Lombardy | 0342 | |
| 23020 | Poggiridenti | SO | Lombardy | 0342 | G431 | Poggiridenti SO - Lombardy | 0342 | |
| 23026 | Ponte in Valtellina | SO | Lombardy | 0342 | G829 | Ponte in Valtellina SO - Lombardy | 0342 | |
| 23010 | Postalesio | SO | Lombardy | 0342 | G937 | Postalesio SO - Lombardy | 0342 | |
| 23010 | Rasura | SO | Lombardy | 0342 | H192 | Rasura SO - Lombardy | 0342 | |
| 23010 | Rogolo | SO | Lombardy | 0342 | H493 | Rogolo SO - Lombardy | 0342 | |
| 23030 | Sernio | SO | Lombardy | 0342 | I636 | Sernio SO - Lombardy | 0342 | |
| 23035 | Sondalo | SO | Lombardy | 0342 | I828 | Sondalo SO - Lombardy | 0342 | |
| 23100 | Sondrio | SO | Lombardy | 0342 | I829 | Sondrio SO - Lombardy | 0342 |