| Code | Name | Region |
|---|---|---|
| CAGRS | Grindstone | QC |
| CAYGZ | Grise Fiord | NU |
| CAGOI | Grondines | QC |
| CAGCA | Gros Cacouna | QC |
| CAGRI | Grosse Isle | MB |
| CAQEE | Grosse Isle | QC |
| CAGRO | Grouse Mountain | BC |
| CAGTH | Grunthal | MB |
| CAGLP | Guelph | ON |
| CASKG | Guernsey | SK |
| CAGLL | Gull Lake | SK |
| CAGTN | Gunton | MB |
| CAGUY | Guy | AB |
| CAGEE | Grande Riviere | QC |
| CAEDI | Grande-digue | NB |
| CAGPL | Grandes-piles | QC |
| CAGVA | Grande-vallee | QC |
| CAGRM | Grand-mere | QC |
| CAGSU | Grand-sault | NB |
| CAGRN | Granton | NS |
| CAGRU | Granum | AB |
| CAGFF | Granville Ferry | NS |
| CAGAI | Grassie | ON |
| CAGRD | Grassland | AB |
| CAGLK | Grassy Lake | AB |
| CAGBG | Gravelbourg | SK |
| CAGVH | Gravenhurst | ON |
| CADAS | Great Bear Lake | NT |
| CAGOS | Green Oaks | NS |
| CAGFL | Greenfield | NS |
| CAGRE | Greenfield Park | QC |
| CAYGN | Greenway Sound | BC |
| CAGRW | Greenwood | BC |
| CA345 | Goulais River | ON |
| CAGWS | Gowanstown | ON |
| CAGFT | Grafton | ON |
| CAGRA | Granby | QC |
| CAGRB | Grand Bank | NL |
| CAGJI | Grand Bend | ON |
| CAGRF | Grand Falls | NB |
| CAGFA | Grand Falls-windsor | NL |
| CAZGF | Grand Forks | BC |
| CAGMA | Grand Manan | NB |
| CAQGM | Grand Mere | QC |
| CA4NG | Grand Pre | NS |
| CAGDR | Grand River | NS |
| CAGTD | Grand Toys Dorval | QC |
| CAGRV | Grand Valley | ON |
| CAGVI | Grand View | MB |
| CAGAE | Grande Anse | NB |