| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siatki | city | Swietokrzyskie | Poland | 50.95 | 19.93 | 830 | 3156 |
| Sichow | city | Swietokrzyskie | Poland | 50.49 | 21.15 | 830 | 5789 |
| Sichow Maly | city | Swietokrzyskie | Poland | 50.49 | 21.17 | 830 | 5132 |
| Sichów Duży | city | Swietokrzyskie | Poland | 50.49 | 21.15 | 830 | 5789 |
| Sichów Mały | city | Swietokrzyskie | Poland | 50.49 | 21.17 | 830 | 5132 |
| Sieczków | city | Swietokrzyskie | Poland | 50.52 | 20.98 | 830 | 4179 |
| Siedlce | city | Swietokrzyskie | Poland | 50.74 | 20.49 | 846 | 8990 |
| Siekierno | city | Swietokrzyskie | Poland | 50.98 | 20.95 | 1151 | 6275 |
| Siekierno Podmielewiec | city | Swietokrzyskie | Poland | 50.99 | 20.93 | 1115 | 5944 |
| Siekierno Podmiescie | city | Swietokrzyskie | Poland | 50.98 | 20.94 | 1102 | 6156 |
| Siekierno Przedgrabie | city | Swietokrzyskie | Poland | 50.98 | 20.95 | 1151 | 6275 |
| Sielec | city | Swietokrzyskie | Poland | 50.54 | 21.12 | 830 | 8945 |
| Sielec | city | Swietokrzyskie | Poland | 50.33 | 20.42 | 830 | 6360 |
| Sielec | city | Swietokrzyskie | Poland | 50.53 | 20.14 | 918 | 4780 |
| Sielec Szpilalny | city | Swietokrzyskie | Poland | 50.37 | 20.66 | 830 | 4761 |
| Sielpia | city | Swietokrzyskie | Poland | 51.12 | 20.36 | 830 | 6569 |
| Sielpia Duża | city | Swietokrzyskie | Poland | 51.12 | 20.36 | 830 | 6569 |
| Sielpia Wielka | city | Swietokrzyskie | Poland | 51.12 | 20.36 | 830 | 6569 |
| Siennica Rozana | city | Swietokrzyskie | Poland | 51.00 | 21.32 | 830 | 11775 |
| Siensko | city | Swietokrzyskie | Poland | 50.62 | 20.04 | 931 | 4596 |
| Sieradowice | city | Swietokrzyskie | Poland | 50.97 | 20.98 | 918 | 6846 |
| Sieradowice Drugie | city | Swietokrzyskie | Poland | 50.97 | 20.97 | 941 | 6670 |
| Sieradowice Pierwsze | city | Swietokrzyskie | Poland | 50.96 | 20.97 | 912 | 6688 |
| Sieradzice | city | Swietokrzyskie | Poland | 50.22 | 20.40 | 879 | 11672 |
| Sieraków | city | Swietokrzyskie | Poland | 50.81 | 20.89 | 1112 | 4727 |
| Sieroslawice | city | Swietokrzyskie | Poland | 51.20 | 20.36 | 921 | 14062 |
| Sierosławice | city | Swietokrzyskie | Poland | 51.20 | 20.36 | 921 | 14062 |
| Sierzawy | city | Swietokrzyskie | Poland | 50.96 | 21.04 | 1007 | 8287 |
| Sieslawice | city | Swietokrzyskie | Poland | 50.46 | 20.69 | 830 | 10531 |
| Siesławice | city | Swietokrzyskie | Poland | 50.46 | 20.69 | 830 | 10531 |
| Sietadowice | city | Swietokrzyskie | Poland | 50.97 | 20.98 | 918 | 6846 |
| Silpia | city | Swietokrzyskie | Poland | 50.87 | 19.80 | 830 | 5316 |
| Silpia Duża | city | Swietokrzyskie | Poland | 50.89 | 19.79 | 830 | 4595 |
| Silpia Mala | city | Swietokrzyskie | Poland | 50.87 | 19.80 | 830 | 5252 |
| Silpia Mała | city | Swietokrzyskie | Poland | 50.87 | 19.80 | 830 | 5252 |
| Sitkowka-Nowiny | city | Swietokrzyskie | Poland | 50.82 | 20.56 | 830 | 77793 |
| Sitkówka | city | Swietokrzyskie | Poland | 50.82 | 20.56 | 830 | 77793 |
| Sitkówka-Nowiny (do 1999) | city | Swietokrzyskie | Poland | 50.82 | 20.56 | 830 | 77793 |