| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | ZIP |
|---|---|---|---|---|---|---|---|---|
| 23100 | Sondrio | SO | Lombardy | 0342 | I829 | Sondrio SO - Lombardy | 23100 | |
| 23100 | Mossini | SO | Lombardy | 0342 | Frazione of Sondrio | Mossini SO - Lombardy Frazione of Sondrio | 23100 | |
| 23100 | Ponchiera | SO | Lombardy | 0342 | Frazione of Sondrio | Ponchiera SO - Lombardy Frazione of Sondrio | 23100 | |
| 23100 | Sant'Anna | SO | Lombardy | 0342 | Frazione of Sondrio | Sant'Anna SO - Lombardy Frazione of Sondrio | 23100 | |
| 23100 | Triangia | SO | Lombardy | 0342 | Frazione of Sondrio | Triangia SO - Lombardy Frazione of Sondrio | 23100 |