| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | area code |
|---|---|---|---|---|---|---|---|---|
| 27023 | Cassolnovo | PV | Lombardy | 0381 | C038 | Cassolnovo PV - Lombardy | 0381 | |
| 27024 | Cilavegna | PV | Lombardy | 0381 | C686 | Cilavegna PV - Lombardy | 0381 | |
| 27025 | Gambolò | PV | Lombardy | 0381 | D901 | Gambolò PV - Lombardy | 0381 | |
| 27020 | Gravellona Lomellina | PV | Lombardy | 0381 | E152 | Gravellona Lomellina PV - Lombardy | 0381 | |
| 27029 | Vigevano | PV | Lombardy | 0381 | L872 | Vigevano PV - Lombardy | 0381 |