The commune Petit-Caux has 18 delegated communes.
| Code ▲ | Name |
|---|---|
| 76027 | Assigny |
| 76037 | Auquemesnil |
| 76073 | Belleville-sur-Mer |
| 76081 | Berneval-le-Grand |
| 76098 | Biville-sur-Mer |
| 76137 | Bracquemont |
| 76145 | Brunville |
| 76215 | Derchigny |
| 76301 | Glicourt |
| 76310 | Gouchaupre |
| 76326 | Greny |
| 76337 | Guilmécourt |
| 76376 | Intraville |
| 76496 | Penly |
| 76618 | Saint-Martin-en-Campagne |
| 76643 | Saint-Quentin-au-Bosc |
| 76696 | Tocqueville-sur-Eu |
| 76704 | Tourville-la-Chapelle |