| ZIP | Locality | Prov | Region | Area Code | Belfiore | Notes | Locality | area code |
|---|---|---|---|---|---|---|---|---|
| 04017 | San Felice Circeo | LT | Lazio | 0773 | H836 | San Felice Circeo LT - Lazio | 0773 | |
| 04013 | Sermoneta | LT | Lazio | 0773 | I634 | Sermoneta LT - Lazio | 0773 | |
| 04018 | Sezze | LT | Lazio | 0773 | I712 | Sezze LT - Lazio | 0773 | |
| 04010 | Sonnino | LT | Lazio | 0773 | I832 | Sonnino LT - Lazio | 0773 | |
| 04019 | Terracina | LT | Lazio | 0773 | L120 | Terracina LT - Lazio | 0773 |