| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Salamanli | city | Nomos Kilkis | Greece | 40.86 | 22.88 | 255 | 4231 |
| Sari-Gol | city | Nomos Kilkis | Greece | 40.96 | 22.86 | 606 | 6432 |
| Sarí Doganlí | city | Nomos Kilkis | Greece | 41.19 | 22.87 | 1535 | 1517 |
| Sarí Pazár | city | Nomos Kilkis | Greece | 40.85 | 22.70 | 134 | 3735 |
| Sekhovon | city | Nomos Kilkis | Greece | 41.12 | 22.51 | 88 | 11295 |
| Sersemli | city | Nomos Kilkis | Greece | 41.03 | 22.87 | 721 | 5458 |
| Sevaston | city | Nomos Kilkis | Greece | 40.98 | 22.94 | 741 | 5561 |
| Sevastó | city | Nomos Kilkis | Greece | 40.98 | 22.94 | 741 | 5561 |
| Sikaminia | city | Nomos Kilkis | Greece | 41.25 | 22.80 | 610 | 2160 |
| Sikaminéa | city | Nomos Kilkis | Greece | 41.25 | 22.80 | 610 | 2160 |
| Sitariá | city | Nomos Kilkis | Greece | 40.96 | 22.65 | 82 | 3723 |
| Skra | city | Nomos Kilkis | Greece | 41.09 | 22.38 | 1728 | 2114 |
| Slopnitsa | city | Nomos Kilkis | Greece | 41.09 | 22.52 | 337 | 5976 |
| Smoli | city | Nomos Kilkis | Greece | 41.07 | 22.57 | 390 | 3142 |
| Snéfcha | city | Nomos Kilkis | Greece | 41.16 | 22.89 | 1286 | 1281 |
| Soultogiannaíïka | city | Nomos Kilkis | Greece | 41.09 | 22.68 | 88 | 3161 |
| Soultoyiannaiika | city | Nomos Kilkis | Greece | 41.09 | 22.68 | 88 | 3161 |
| Soutoyianneika | city | Nomos Kilkis | Greece | 41.09 | 22.68 | 88 | 3161 |
| Spourgítis | city | Nomos Kilkis | Greece | 41.10 | 22.96 | 1085 | 1043 |
| Stavrochori | city | Nomos Kilkis | Greece | 41.03 | 22.79 | 291 | 6208 |
| Stavrochórion | city | Nomos Kilkis | Greece | 41.03 | 22.79 | 291 | 6208 |
| Stavrokhorion | city | Nomos Kilkis | Greece | 41.03 | 22.79 | 291 | 6208 |
| Stavrokhóri | city | Nomos Kilkis | Greece | 41.03 | 22.79 | 291 | 6208 |
| Strézovon | city | Nomos Kilkis | Greece | 40.99 | 22.93 | 557 | 5555 |
| Státhis | city | Nomos Kilkis | Greece | 40.95 | 22.49 | 429 | 3455 |
| Surlovon | city | Nomos Kilkis | Greece | 41.19 | 22.81 | 908 | 2171 |
| Sykaminéa | city | Nomos Kilkis | Greece | 41.25 | 22.80 | 610 | 2160 |
| Synoikismos Pikrolimni | city | Nomos Kilkis | Greece | 40.86 | 22.81 | 255 | 3937 |
| Synoikismos Sarakatsanaion | city | Nomos Kilkis | Greece | 40.98 | 22.77 | 459 | 7007 |