| Locality | Postal Code |
|---|---|
| Belle Point, Saint John the Baptist | 70084 |
| Edgard, Saint John the Baptist | 70049 |
| Garyville, Saint John the Baptist | 70051 |
| La Place, Saint John the Baptist | 70068 |
| Lions, Saint John the Baptist | 70084 |
| Mount Airy, Saint John the Baptist | 70076 |
| Reserve, Saint John the Baptist | 70084 |
| Vacherie, Saint John the Baptist | 70090 |
| Wallace, Saint John the Baptist | 70049 |