| Postal Code | Locality / District | Administrative Area | Coordinates |
|---|---|---|---|
| Doujani | Doujani District · Mamoudzou | -12.79389, 45.21492 | |
| Doujani North | Doujani District · Mamoudzou | -12.78589, 45.22292 | |
| Kaouéni | Kaouéni District · Mamoudzou | -12.77121, 45.22419 | |
| Majikavo Lamir | Kaouéni District · Mamoudzou | -12.75572, 45.22968 | |
| Angoro | Kaouéni District · Mamoudzou | -12.75, 45.23333 | |
| Kavani | Kavani District · Mamoudzou | -12.78447, 45.22299 | |
| Kavani North | Kavani District · Mamoudzou | -12.77647, 45.23099 | |
| Mamoudzou | Mamoudzou District · Mamoudzou | -12.78234, 45.22878 | |
| Mamoudzou North | Mamoudzou District · Mamoudzou | -12.77434, 45.23678 | |
| Mtsapéré | Mtsapéré District · Mamoudzou | -12.78636, 45.21732 | |
| M Sapéré | Mtsapéré District · Mamoudzou | -12.78619, 45.21655 | |
| Passamainty | Passamainty District · Mamoudzou | -12.80201, 45.20818 | |
| Combani | Passamainty District · Mamoudzou | -12.8, 45.16667 | |
| Vahibé | Passamainty District · Mamoudzou | -12.79024, 45.17707 | |
| Tsoundzou 1 | Passamainty District · Mamoudzou | -12.80615, 45.2023 | |
| Tsoundzou 2 | Passamainty District · Mamoudzou | -12.81845, 45.1972 | |
| Passamaïnti | Passamainty District · Mamoudzou | -12.80127, 45.21061 | |
| Kwalé | Passamainty District · Mamoudzou | -12.80507, 45.19737 | |
| Kwalé Légion | Passamainty District · Mamoudzou | -12.79739, 45.18814 |
Postal code prefix 21 in Mayotte covers 19 localities (primarily in Mamoudzou, including Doujani), spanning from 21000 to 21507.
There are 19 active postal codes starting with 21 in Mayotte. Use the interactive directory table above to filter by locality or copy any code in one click.