| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Σιλίστρα | city | Silistra | Bulgaria | 44.12 | 27.27 | 22 | 36903 |
| Σλίβεν | city | Sliven | Bulgaria | 42.69 | 26.33 | 830 | 53685 |
| Στάρα Ζαγόρα | city | Stara Zagora | Bulgaria | 42.43 | 25.64 | 830 | 74743 |
| Σόφια | city | Sofia-Grad | Bulgaria | 42.68 | 23.32 | 1942 | 140932 |