| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Salabani | city | Rift Valley Province | Kenya | 0.55 | 36.05 | 3461 | 2254 |
| Salengai | city | Rift Valley Province | Kenya | -2.1833333 | 37.1666667 | 4087 | 2294 |
| Samuli | city | Rift Valley Province | Kenya | -2.1166667 | 37.4333333 | 3743 | 5859 |
| Sandai | city | Rift Valley Province | Kenya | 0.3833333 | 36.0833333 | 3556 | 3959 |
| Sang'alo | city | Rift Valley Province | Kenya | 0.35 | 35.05 | 6397 | 29205 |
| Sangʼalo | city | Rift Valley Province | Kenya | 0.35 | 35.05 | 6397 | 29205 |
| Sarora | city | Rift Valley Province | Kenya | 0.4666667 | 35 | 6499 | 25743 |
| Sebit | city | Rift Valley Province | Kenya | 1.4 | 35.3333333 | 4704 | 6244 |
| Selengai | city | Rift Valley Province | Kenya | -2.1833333 | 37.1666667 | 4087 | 2294 |
| Seretunin | city | Rift Valley Province | Kenya | 0.55 | 35.7833333 | 5944 | 11848 |
| Serkonghun | city | Rift Valley Province | Kenya | 0.6 | 35.7666667 | 7103 | 8658 |
| Serkongun | city | Rift Valley Province | Kenya | 0.6 | 35.7666667 | 7103 | 8658 |
| Sesia | city | Rift Valley Province | Kenya | 0.5 | 35.8166667 | 5318 | 13634 |
| Shabaltaragwa | city | Rift Valley Province | Kenya | -0.55 | 35.8 | 8749 | 8262 |
| Shamenei | city | Rift Valley Province | Kenya | 0.05 | 36.2833333 | 7660 | 16444 |
| Shamenek | city | Rift Valley Province | Kenya | 0.1 | 36.3166667 | 7946 | 10195 |
| Shimoni | city | Rift Valley Province | Kenya | 0.05 | 35.7166667 | 6961 | 14028 |
| Shombole | city | Rift Valley Province | Kenya | -2.0833333 | 36.1166667 | 2178 | 981 |
| Sibillo | city | Rift Valley Province | Kenya | 0.6833333 | 35.9166667 | 4202 | 6442 |
| Sibilo | city | Rift Valley Province | Kenya | 0.6833333 | 35.9166667 | 4202 | 6442 |
| Sigoor Camp | city | Rift Valley Province | Kenya | 1.4833333 | 35.4666667 | 3218 | 3802 |
| Sigor | city | Rift Valley Province | Kenya | 1.4833333 | 35.4666667 | 3218 | 3802 |
| Simba | city | Rift Valley Province | Kenya | -2.1666667 | 37.6 | 3582 | 4658 |
| Singore | city | Rift Valley Province | Kenya | 0.7166667 | 35.5166667 | 7742 | 18879 |
| Sintakara | city | Rift Valley Province | Kenya | -1 | 36.15 | 7575 | 7434 |
| Siongiroi | city | Rift Valley Province | Kenya | -0.9166667 | 35.2166667 | 5997 | 30729 |
| Sitaman | city | Rift Valley Province | Kenya | 1.0666667 | 35.25 | 7139 | 18023 |
| Sondu | city | Rift Valley Province | Kenya | -0.3833333 | 35.0166667 | 4996 | 55224 |
| Sosiot | city | Rift Valley Province | Kenya | -0.3666667 | 35.1666667 | 6135 | 40740 |
| Sotik | city | Rift Valley Province | Kenya | -0.6833333 | 35.1166667 | 5938 | 50009 |
| Sotik | city | Rift Valley Province | Kenya | -0.7833333 | 35.35 | 6938 | 42060 |
| Sotik Post | city | Rift Valley Province | Kenya | -0.7833333 | 35.35 | 6938 | 42060 |
| South Horr | city | Rift Valley Province | Kenya | 2.1 | 36.9166667 | 3756 | 373 |
| Soy | city | Rift Valley Province | Kenya | 0.6666667 | 35.15 | 6348 | 28576 |
| Subuku | city | Rift Valley Province | Kenya | 0.15 | 36.3666667 | 7244 | 5237 |
| Sultan Hamud | city | Rift Valley Province | Kenya | -2.0166667 | 37.3666667 | 4327 | 13286 |
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