| Code | Name | Region |
|---|---|---|
| CHSVP | Silvaplana | GR |
| CHSIN | Sins | AG |
| CHSIR | Sion | VS |
| CHSNH | Sirnach | TG |
| CHSSH | Sissach | BL |
| CHSPF | Schupfheim | LU |
| CHSDR | Schwadernau | BE |
| CHSDN | Schwanden | GL |
| CHSWH | Schwarzenbach | SG |
| CHSZB | Schwarzenburg | BE |
| CHWEI | Schweizerhalle | BL |
| CHSCW | Schwellbrunn | AR |
| CHSWB | Schwerzenbach | ZH |
| CHSCZ | Schwyz | SZ |
| CHSCU | Scuol | GR |
| CHSEE | Seegraeben | ZH |
| CHSGZ | Seengen | AG |
| CHSWE | Seewen | SO |
| CHSWN | Seewen | SZ |
| CHSEF | Seftigen | BE |
| CHSLZ | Selzach | SO |
| CHSMB | Sembrancher | VS |
| CHSPA | Sempach | LU |
| CHSPS | Sempach Station | LU |
| CHSEM | Semsales | FR |
| CHSCD | Schinznach Dorf | AG |
| CHSHT | Schlatt | TG |
| CHSLI | Schlattingen | TG |
| CHSHR | Schlieren | ZH |
| CHSMK | Schmerikon | SG |
| CHSCK | Schmerikon | SZ |
| CHSCM | Schmitten | FR |
| CHSNG | Schoenenberg | ZH |
| CHSFL | Schoftland | AG |
| CHSBL | Schonbuhl | BE |
| CHSGT | Schonenberg | TG |
| CHSBC | Schonenbuch | BL |
| CHSOH | Schonenbuch | BL |
| CHSHB | Schonengrund | AR |
| CHSWD | Schonenwerd | SO |
| CHSOE | Schonried | BE |
| CHSHZ | Schotz | LU |
| CHSBB | Schubelbach | SZ |
| CHSBH | Schupbach | BE |
| CHSFN | Schupfen | BE |
| CHSAR | Sargans | SG |
| CHSNN | Sarnen | OW |
| CHSAT | Satigny | GE |
| CHSVS | Saviese | VS |
| CHSAV | Savigny | VD |