| Place | Post Code |
|---|---|
| Chagaik, Chepseon | 20200 |
| Chepcholiet, Chepseon | 20200 |
| Chepsir, Chepseon | 20200 |
| Chesinende, Chepseon | 20200 |
| Cheymen, Chepseon | 20200 |
| Momoniat, Chepseon | 20200 |
| Tugunon, Chepseon | 20200 |
| All postal codes in Kipkelion East | |
|---|---|
| Chepseon, Kipkelion East | |
| Kedowa/Kimugul, Kipkelion East | |
| Londiani, Kipkelion East | |
| Tendeno/Sorget, Kipkelion East | |