| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siah Kalan | city | Alborz | Iran | 35.89 | 51.01 | 6709 | 236608 |
| Sibandarreh | city | Alborz | Iran | 36.02 | 50.94 | 7549 | 2086 |
| Sibestan | city | Alborz | Iran | 36.05 | 50.81 | 6709 | 5037 |
| Sim Na`aleh | city | Alborz | Iran | 36.02 | 51.10 | 8421 | 20860 |
| Sirah | city | Alborz | Iran | 36.03 | 51.15 | 7618 | 20860 |
| Sirud | city | Alborz | Iran | 36.08 | 50.90 | 7549 | 2086 |