| Councils |
|---|
| Central Mwingi, Mwingi Central |
| Kiomo/Kyethani, Mwingi Central |
| Kivou, Mwingi Central |
| Mui, Mwingi Central |
| Nguni, Mwingi Central |
| Nuu, Mwingi Central |
| Waita, Mwingi Central |
| All postal codes in Kitui |
|---|
| Kitui Central |
| Kitui East |
| Kitui Rural |
| Kitui South |
| Kitui West |
| Mwingi Central |
| Mwingi North |
| Mwingi West |