| Code | Name | Region |
|---|---|---|
| CACRC | Courtice | ON |
| CACLN | Courtland | ON |
| CACRR | Courtright | ON |
| CACMP | Compton | QC |
| CAZBL | Conception Bay South | NL |
| CACNC | Concord | ON |
| CACSJ | Coniston | ON |
| CACNN | Conklin | AB |
| CACQT | Conquitlam | BC |
| CACOC | Contrecoeur | QC |
| CACKS | Cookshire | QC |
| CACSW | Cookstown | ON |
| CACVI | Cooksville | ON |
| CAOKC | Cookville | NS |
| CACOO | Coombs | BC |
| CAYCP | Co-op Point | MB |
| CACFL | Cooper Cliff | ON |
| CACPC | Copper Cliff | ON |
| CACOP | Coppermine | NU |
| CACOQ | Coquitlam | BC |
| CAYZS | Coral Harbour | NU |
| CACBR | Corbeil | ON |
| CACBK | Corner Brook | NL |
| CACCC | Colchester County | NS |
| CAYOD | Cold Lake | AB |
| CACDB | Coldbrook | NS |
| CACDM | Coldstream | BC |
| CACDW | Coldwater | ON |
| CACEM | Coleman | AB |
| CACPD | Coleman | PE |
| CACYP | Coley's Point | NL |
| CACOL | Collingwood | ON |
| CAORE | Collingwood Corner | NS |
| CAYKC | Collins Bay | SK |
| CACOY | Colonsay | SK |
| CAYCK | Colville Lake | NT |
| CACLW | Colwood | BC |
| CACOB | Comber | ON |
| CACBM | Combermere | ON |
| CACBC | Come By Chance | NL |
| CACCV | Comfort Cove | NL |
| CACND | Comfort Cove-newstead | NL |
| CACOX | Comox | BC |
| CACON | Clinton | BC |
| CACLI | Clinton | ON |
| CAYLM | Clinton Creek | YT |
| CA5DV | Clive | AB |
| CACVD | Cloverdale | BC |
| CACNY | Cluny | AB |
| CACLR | Clyde River | NU |