| Place | Post Code |
|---|---|
| Chepkongony, Kaptumo-Kaboi | 30300 |
| Ibanja, Kaptumo-Kaboi | 30300 |
| Kaboi, Kaptumo-Kaboi | 30300 |
| Kamarich, Kaptumo-Kaboi | 30300 |
| Kapsoo, Kaptumo-Kaboi | 30300 |
| Mosombor, Kaptumo-Kaboi | 30300 |
| Mugundoi, Kaptumo-Kaboi | 30300 |
| All postal codes in Aldai | |
|---|---|
| Kabwareng, Aldai | |
| Kaptumo-Kaboi, Aldai | |
| Kemeloi-Maraba, Aldai | |
| Kobujoi, Aldai | |
| Koyo-Ndurio, Aldai | |
| Terik, Aldai | |