| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siant-Michel | city | Nord-Pas-de-Calais | France | 50.38 | 2.36 | 341 | 9913 |
| Siant-Michel-sur-Ternoise | city | Nord-Pas-de-Calais | France | 50.38 | 2.36 | 341 | 9913 |
| Sibiville | city | Nord-Pas-de-Calais | France | 50.30 | 2.32 | 830 | 5779 |
| Simencourt | city | Nord-Pas-de-Calais | France | 50.26 | 2.64 | 334 | 6559 |
| Sin | city | Nord-Pas-de-Calais | France | 50.36 | 3.13 | 68 | 88378 |
| Sin | city | Nord-Pas-de-Calais | France | 50.61 | 3.23 | 101 | 54348 |
| Sin-le-Noble | city | Nord-Pas-de-Calais | France | 50.36 | 3.13 | 68 | 88378 |
| Sin-le-Nope | city | Nord-Pas-de-Calais | France | 50.36 | 3.13 | 68 | 88378 |
| Sint-Jans-Kapel | city | Nord-Pas-de-Calais | France | 50.76 | 2.72 | 187 | 18485 |
| Sint-Janskappel | city | Nord-Pas-de-Calais | France | 50.76 | 2.72 | 187 | 18485 |
| Sint-Joris-aan-de-Aa | city | Nord-Pas-de-Calais | France | 50.97 | 2.16 | 6 | 22327 |
| Sint-Martiny-lés-Boulonne | city | Nord-Pas-de-Calais | France | 50.73 | 1.62 | 242 | 93080 |
| Sint-Omaars | city | Nord-Pas-de-Calais | France | 50.75 | 2.26 | 16 | 50086 |
| Sint-Pieters-Broek | city | Nord-Pas-de-Calais | France | 50.90 | 2.19 | 6 | 8720 |
| Sint-Pietersbroek | city | Nord-Pas-de-Calais | France | 50.90 | 2.19 | 6 | 8720 |
| Sint-Pols | city | Nord-Pas-de-Calais | France | 51.03 | 2.34 | 6 | 105685 |
| Sint-Pols-aan-Zee | city | Nord-Pas-de-Calais | France | 51.03 | 2.34 | 6 | 105685 |
| Sint-Winoksbergen | city | Nord-Pas-de-Calais | France | 50.97 | 2.43 | 3 | 30539 |
| Siracourt | city | Nord-Pas-de-Calais | France | 50.37 | 2.27 | 830 | 3649 |