22 communes — Département 973
| Commune | Population | Code postal | Code INSEE |
|---|---|---|---|
| Apatou | 9 582 | 97317 | 97360 |
| Awala-Yalimapo | 1 482 | 97319 | 97361 |
| Camopi | 1 894 | 97330 | 97356 |
| Cayenne | 65 956 | 97300 | 97302 |
| Grand-Santi | 8 859 | 97340 | 97357 |
| Iracoubo | 1 729 | 97350 | 97303 |
| Kourou | 24 805 | 97310 | 97304 |
| Macouria | 19 087 | 97355 | 97305 |
| Mana | 11 605 | 97360 | 97306 |
| Maripasoula | 9 768 | 97370 | 97353 |
| Matoury | 34 474 | 97351 | 97307 |
| Montsinéry-Tonnegrande | 3 141 | 97356 | 97313 |
| Ouanary | 266 | 97380 | 97314 |
| Papaichton | 5 684 | 97316 | 97362 |
| Régina | 844 | 97353 | 97301 |
| Remire-Montjoly | 25 793 | 97354 | 97309 |
| Roura | 3 436 | 97311 | 97310 |
| Saint-Élie | 244 | 97312 | 97358 |
| Saint-Georges | 4 303 | 97313 | 97308 |
| Saint-Laurent-du-Maroni | 49 173 | 97320 | 97311 |
| Saül | 153 | 97314 | 97352 |
| Sinnamary | 2 855 | 97315 | 97312 |