| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Saikago | city | Eastern Province | Kenya | -0.5833333 | 37.6333333 | 4009 | 15711 |
| Saricho | city | Eastern Province | Kenya | 1.0833333 | 39.0833333 | 734 | 560 |
| Sericho | city | Eastern Province | Kenya | 1.0833333 | 39.0833333 | 734 | 560 |
| Siakago | city | Eastern Province | Kenya | -0.5833333 | 37.6333333 | 4009 | 15711 |
| Simisi | city | Eastern Province | Kenya | -2 | 38.3333333 | 2870 | 1391 |
| Skwata | city | Eastern Province | Kenya | -1.8833333 | 38.4166667 | 2933 | 1391 |
| Sololo | city | Eastern Province | Kenya | 3.55 | 38.65 | 2539 | 260 |
| Songeni | city | Eastern Province | Kenya | -1.5666667 | 37.4833333 | 4763 | 37462 |
| Syolima | city | Eastern Province | Kenya | -1.4333333 | 38.0833333 | 3461 | 20739 |
| Syumbungu | city | Eastern Province | Kenya | -0.9 | 38.5 | 1771 | 2990 |
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