| All postal codes in Mutambu |
| Bubanza, Mutambu |
| Bugongo, Mutambu |
| Buhanda, Mutambu |
| Burima, Mutambu |
| Gakara, Mutambu |
| Gomvyi, Mutambu |
| Masenga, Mutambu |
| Murambi, Mutambu |
| Ntobo, Mutambu |
| Nyankere, Mutambu |
| Nyarwedeka, Mutambu |
| Rubanda, Mutambu |
| Rukingiro, Mutambu |
| Rutovu, Mutambu |
| Ruvyagira, Mutambu |
| Vumbiro, Mutambu |