| Place | Postal Code |
|---|---|
| Kandae, Mutomo | 90200 |
| Kawelu, Mutomo | 90200 |
| Kibwea, Mutomo | 90200 |
| Kitoo, Mutomo | 90200 |
| Mutomo, Mutomo | 90201 |
| Mwala, Mutomo | 90200 |
| Postal Codes in Kitui South | |
|---|---|
| Athi, Kitui South | |
| Ikanga/Kyatune, Kitui South | |
| Ikutha, Kitui South | |
| Kanziko, Kitui South | |
| Mutha, Kitui South | |
| Mutomo, Kitui South | |