17 communes — Département 976
| Commune | Population | Code postal | Code INSEE |
|---|---|---|---|
| Acoua | 5 192 | 97630 | 97601 |
| Bandraboua | 13 989 | 97650 | 97602 |
| Bandrele | 10 282 | 97660 | 97603 |
| Bouéni | 6 189 | 97620 | 97604 |
| Chiconi | 8 295 | 97670 | 97605 |
| Chirongui | 8 920 | 97620 | 97606 |
| Dembeni | 15 848 | 97660 | 97607 |
| Dzaoudzi | 17 831 | 97615 | 97608 |
| Kani-Kéli | 5 507 | 97625 | 97609 |
| Koungou | 32 156 | 97600 | 97610 |
| M'Tsangamouji | 6 432 | 97650 | 97613 |
| Mamoudzou | 71 437 | 97600 | 97611 |
| Mtsamboro | 7 705 | 97630 | 97612 |
| Ouangani | 10 203 | 97670 | 97614 |
| Pamandzi | 11 442 | 97615 | 97615 |
| Sada | 11 156 | 97640 | 97616 |
| Tsingoni | 13 934 | 97680 | 97617 |