| Place | Post Code |
|---|---|
| Belekenya, Kosirai | 30300 |
| Chepterit, Kosirai | 30300 |
| Kamonjil, Kosirai | 30300 |
| Kaptildil, Kosirai | 30300 |
| Kokwet, Kosirai | 30300 |
| Kosirai, Kosirai | 30300 |
| Mateget, Kosirai | 30300 |
| Mosoriot, Kosirai | 30307 |
| Ndaptabwa, Kosirai | 30300 |
| Segut, Kosirai | 30300 |
| Tebeson, Kosirai | 30300 |
| All postal codes in Chesumei | |
|---|---|
| Chemundu/Kapng'Etuny, Chesumei | |
| Kaptel/Kamoiywo, Chesumei | |
| Kiptuya, Chesumei | |
| Kosirai, Chesumei | |
| Lelmokwo/Ngechek, Chesumei | |