| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | ZIP |
|---|---|---|---|---|---|---|---|---|
| 00012 | Guidonia | RM | Lazio | Frazione of Guidonia Montecelio | Guidonia RM - Lazio Frazione of Guidonia Montecelio | 00012 | ||
| 00012 | Guidonia Montecelio | RM | Lazio | 0774 | E263 | Guidonia Montecelio RM - Lazio | 00012 |