| Sr. No. | City |
|---|---|
| 326 | OBERSTAMMHEIM |
| 327 | OBERUZWIL |
| 328 | OBERWIL |
| 329 | OENSINGEN |
| 330 | OEY |
| 331 | OFTRINGEN |
| 332 | OLTEN |
| 333 | OPFIKON-GLATTBRUGG |
| 334 | ORBE |
| 335 | ORSIERES |
| 336 | OSTERMUNDIGEN |
| 337 | PARADISO |
| 338 | PAYERNE |
| 339 | PAZZALLO |
| 340 | PETIT-LANCY |
| 341 | PFAEFFIKON |
| 342 | PFAFFNAU |
| 343 | PFYN |
| 344 | PLAFFEIEN |
| 345 | PLAN-LES-OUATES |
| 346 | PONTE TRESA |
| 347 | PONTRESINA |
| 348 | PORRENTRUY |
| 349 | POSCHIAVO |
| 350 | PRATTELN |