| Place | Post Code |
|---|---|
| Duga Barabarani, Duga | 21114 |
| Duga Dampo, Duga | 21114 |
| Duga Mpya, Duga | 21114 |
| Duga Viwandani, Duga | 21114 |
| Jaje, Duga | 21114 |
| Magomeni A, Duga | 21114 |
| Magomeni B, Duga | 21114 |
| Magomeni C, Duga | 21114 |
| Majengo A, Duga | 21114 |
| Majengo B, Duga | 21114 |
| Majengo C, Duga | 21114 |
| Mapinduzi, Duga | 21114 |
| Mji Mwema, Duga | 21114 |
| Mwakizaro B, Duga | 21114 |