| Code | Name | Region |
|---|---|---|
| CAANA | Saint-anaclet | QC |
| CASRK | Saint-andre | NB |
| CASAA | Saint-andre-avellin | QC |
| CASNH | Saanich | BC |
| CASNC | Saanichton | BC |
| CASXO | Saanichton Bay | BC |
| CAYSA | Sable Island | NS |
| CASRI | Sable River | NS |
| CAZPB | Sachigo Lake | ON |
| CAYSY | Sachs Harbour | NT |
| CASAC | Sackville | NB |
| CAXKV | Sackville | NS |
| CAQ4C | Sacre-coeur-saguenay | QC |
| CAYSV | Saglek | NL |
| CASAG | Saguenay | QC |
| CAS8A | Saint Albert | AB |
| CASC4 | Saint Catherines | ON |
| CAF5R | Saint Clements | ON |
| CAFDM | Saint Francois De Madawaska | NB |
| CASF6 | Saint Frederic | QC |
| CASHQ | Saint Hilarion | QC |
| CASJM | Saint Jerome | QC |
| CASGR | Saint Liguori | QC |
| CARSR | Rosser | MB |
| CAOSS | Rosslyn | ON |
| CARPO | Rossport | ON |
| CA2KS | Rosthern | SK |
| CARSZ | Rothesay | NB |
| CAROU | Rougemont | QC |
| CARSA | Rouleau | SK |
| CARDH | Round Hill | AB |
| CAZRJ | Round Lake | ON |
| CAYUY | Rouyn-noranda | QC |
| CARWT | Rowatt | SK |
| CAROX | Roxboro | QC |
| CARXF | Roxton Falls | QC |
| CARXP | Roxton Pond | QC |
| CARUI | Rupert Inlet | BC |
| CARHL | Rush Lake | SK |
| CARUS | Ruskin | BC |
| CARLL | Russell | MB |
| CARUV | Ruthven | ON |
| CARLY | Ryley | AB |
| CAROF | Rock Forest | QC |
| CAROK | Rockland | ON |
| CAGNN | Rockport | ON |
| CARQQ | Rockton | ON |
| CARCD | Rockwood | ON |
| CAYRM | Rocky Mountain House | AB |
| CAABR | Rocky View County | AB |