| Postal Code | Town | County |
|---|---|---|
| 20501 | Keekorok | Narok |
| 40515 | Kegogi | Nyamira |
| 40416 | Kegonga | Migori |
| 40413 | Kehancha | Migori |
| 40301 | Kendu Bay | Homa Bay |
| 00609 | Kenyatta University | Kiambu |
| 40211 | Kenyenya | Kisii |
| 40202 | Keroka | Kisii |
| 10300 | Kerugoya | Kirinyaga |
| 00906 | Kerwa | Kiambu |