| Place | Post Code |
|---|---|
| Badana Gardida, Sericho | 60300 |
| Eldera, Sericho | 60300 |
| Eresa Boru, Sericho | 60300 |
| Gubatu, Sericho | 60300 |
| Modogashe North, Sericho | 60300 |
| Modogashe South, Sericho | 60300 |
| Quri, Sericho | 60300 |
| Sericho, Sericho | 60300 |
| All postal codes in Isiolo South | |
|---|---|
| Garba Tulla, Isiolo South | |
| Kinna, Isiolo South | |
| Sericho, Isiolo South | |