| Sr. No. | City |
|---|---|
| 426 | SIERRE/SIDERS |
| 427 | SIGNAU |
| 428 | SINS |
| 429 | SION/SITTEN |
| 430 | SIRNACH |
| 431 | SISSACH |
| 432 | SOERENBERG |
| 433 | SOLOTHURN |
| 434 | SONVICO |
| 435 | SORENS |
| 436 | SPEICHER |
| 437 | SPIEZ |
| 438 | SPREITENBACH |
| 439 | ST. ANTONI |
| 440 | ST. GALLEN |
| 441 | ST. IMIER |
| 442 | ST. MARGRETHEN |
| 443 | ST. MORITZ |
| 444 | ST.IMIER |
| 445 | ST.NIKLAUS |
| 446 | ST.URSANNE |
| 447 | STAAD |
| 448 | STABIO |
| 449 | STAEFA |
| 450 | STANS |