| Place | Post Code |
|---|---|
| Karaba, Marmanet | 20300 |
| Kiambogo, Marmanet | 20300 |
| Marmanet, Marmanet | 20322 |
| Melwa, Marmanet | 20300 |
| Muhotetu, Marmanet | 20323 |
| Oljabet, Marmanet | 20300 |
| Siron, Marmanet | 20300 |
| Thigio, Marmanet | 20300 |
| All postal codes in Laikipia West | |
|---|---|
| Githiga (Laikipia), Laikipia West | |
| Igwamiti, Laikipia West | |
| Marmanet, Laikipia West | |
| Ol-Moran, Laikipia West | |
| Rumuruti Township, Laikipia West | |
| Salama, Laikipia West | |