| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Galatea | city | Colorado | United States | 38.50 | -103.02 | 4379 | |
| Galena | city | Colorado | United States | 38.26 | -105.28 | 8389 | |
| Galeton | city | Colorado | United States | 40.52 | -104.59 | 5029 | |
| Galien | city | Colorado | United States | 40.69 | -103.01 | 4189 | |
| Garcia | city | Colorado | United States | 37.00 | -105.54 | 7759 | |
| Garden City | city | Colorado | United States | 40.39 | -104.69 | 5029 | |
| Gardner | city | Colorado | United States | 37.78 | -105.17 | 6899 | |
| Garfield | city | Colorado | United States | 38.55 | -106.29 | 10068 | |
| Garland City (historical) | city | Colorado | United States | 37.45 | -105.34 | 8389 | |
| Garo | city | Colorado | United States | 39.11 | -105.89 | 9228 | |
| Gary | city | Colorado | United States | 40.07 | -103.58 | 4399 | |
| Gaskil | city | Colorado | United States | 40.33 | -105.86 | 8799 | |
| Gates | city | Colorado | United States | 40.53 | -104.76 | 5029 | |
| Gateview | city | Colorado | United States | 38.29 | -107.22 | 8389 | |
| Gateway | city | Colorado | United States | 39.55 | -104.91 | 5898 | |
| Gateway | city | Colorado | United States | 38.68 | -108.98 | 4596 | |
| Gateway Park | city | Colorado | United States | 39.74 | -104.86 | 5374 | |
| Gato | city | Colorado | United States | 37.05 | -107.20 | 6709 | |
| Gem Village | city | Colorado | United States | 37.22 | -107.64 | 6797 | |
| Gems Park Estates | city | Colorado | United States | 39.60 | -105.24 | 7549 | |
| Genesee | city | Colorado | United States | 39.69 | -105.27 | 7598 | |
| Genesee Ridge | city | Colorado | United States | 39.68 | -105.27 | 7598 | |
| Genoa | city | Colorado | United States | 39.28 | -103.50 | 5869 | |
| Georgetown | city | Colorado | United States | 39.71 | -105.70 | 8622 | |
| Gerrard | city | Colorado | United States | 37.68 | -106.59 | 8389 | |
| Giddings | city | Colorado | United States | 40.62 | -105.01 | 5059 | |
| Gilcrest | city | Colorado | United States | 40.28 | -104.78 | 5029 | |
| Gill | city | Colorado | United States | 40.45 | -104.54 | 5029 | |
| Gillett (historical) | city | Colorado | United States | 38.78 | -105.12 | 10068 | |
| Gilman | city | Colorado | United States | 39.53 | -106.39 | 9622 | |
| Gilpin | city | Colorado | United States | 37.95 | -103.18 | 4189 | |
| Gilpin | city | Colorado | United States | 39.89 | -105.51 | 9228 | |
| Gilson Gulch | city | Colorado | United States | 39.76 | -105.51 | 8389 | |
| Gilsonite | city | Colorado | United States | 39.18 | -108.78 | 4517 | |
| Glade Park | city | Colorado | United States | 38.99 | -108.74 | 6788 | |
| Gladstone (historical) | city | Colorado | United States | 37.89 | -107.65 | 10908 | |
| Glen Comfort | city | Colorado | United States | 40.39 | -105.44 | 7549 | |
| Glen Echo | city | Colorado | United States | 40.70 | -105.59 | 7549 | |
| Glen Eden | city | Colorado | United States | 40.72 | -106.92 | 7549 | |
| Glen Eyrie | city | Colorado | United States | 38.89 | -104.88 | 6709 | |
| Glen Haven | city | Colorado | United States | 40.45 | -105.45 | 7670 | |
| Glen Park | city | Colorado | United States | 39.11 | -104.92 | 7549 | |
| Glendale | city | Colorado | United States | 40.08 | -105.37 | 7057 | |
| Glendale | city | Colorado | United States | 39.70 | -104.93 | 5406 | |
| Glendevey | city | Colorado | United States | 40.81 | -105.94 | 8398 | |
| Gleneagle | city | Colorado | United States | 39.05 | -104.82 | 6860 | |
| Glenelk | city | Colorado | United States | 39.46 | -105.36 | 8389 | |
| Glenisle | city | Colorado | United States | 39.41 | -105.51 | 8389 | |
| Glentivar | city | Colorado | United States | 39.05 | -105.60 | 9228 | |
| Glenwood Springs | city | Colorado | United States | 39.55 | -107.32 | 5869 | |
| Golconda | city | Colorado | United States | 37.46 | -108.15 | 9288 | |
| Gold Hill | city | Colorado | United States | 39.55 | -106.05 | 9228 | |
| Gold Hill | city | Colorado | United States | 40.06 | -105.41 | 8398 | |
| Gold Run | city | Colorado | United States | 40.05 | -105.41 | 7749 | |
| Golden | city | Colorado | United States | 39.76 | -105.22 | 5869 | |
| Golden Heights | city | Colorado | United States | 39.72 | -105.18 | 6709 | |
| Golden Meadows | city | Colorado | United States | 39.58 | -105.23 | 7549 | |
| Goldenwest Park | city | Colorado | United States | 39.59 | -105.02 | 5419 | |
| Goldfield | city | Colorado | United States | 38.72 | -105.13 | 10908 | |
| Goodale | city | Colorado | United States | 38.12 | -102.44 | 3546 | |
| Goodell Corner | city | Colorado | United States | 40.74 | -105.58 | 8415 | |
| Gooding | city | Colorado | United States | 40.07 | -105.08 | 5029 | |
| Goodnight | city | Colorado | United States | 38.26 | -104.67 | 5029 | |
| Goodpasture | city | Colorado | United States | 38.08 | -104.92 | 6184 | |
| Goodrich | city | Colorado | United States | 40.35 | -104.06 | 4383 | |
| Gothic | city | Colorado | United States | 38.96 | -106.99 | 9484 | |
| Gould | city | Colorado | United States | 40.53 | -106.03 | 9228 | |
| Gowanda | city | Colorado | United States | 40.20 | -104.90 | 5029 | |
| Graft | city | Colorado | United States | 37.45 | -102.89 | 5029 | |
| Granada | city | Colorado | United States | 38.06 | -102.31 | 3497 | |
| Granby | city | Colorado | United States | 40.09 | -105.94 | 8389 | |
| Grand Island (historical) | city | Colorado | United States | 39.97 | -105.60 | 10068 | |
| Grand Junction | city | Colorado | United States | 39.06 | -108.55 | 4616 | |
| Grand Lake | city | Colorado | United States | 40.25 | -105.82 | 8389 | |
| Grand Mesa | city | Colorado | United States | 39.04 | -107.95 | 10170 | |
| Grand View Estates | city | Colorado | United States | 39.54 | -104.82 | 5895 | |
| Grandview | city | Colorado | United States | 37.23 | -107.83 | 6797 | |
| Granite | city | Colorado | United States | 39.04 | -106.26 | 9228 | |
| Grant | city | Colorado | United States | 39.46 | -105.66 | 8763 | |
| Graymont | city | Colorado | United States | 39.69 | -105.80 | 10908 | |
| Greeley | city | Colorado | United States | 40.42 | -104.71 | 5029 | |
| Greeley Junction | city | Colorado | United States | 40.46 | -104.69 | 5029 | |
| Green Gables | city | Colorado | United States | 39.68 | -105.10 | 5869 | |
| Green Mountain | city | Colorado | United States | 39.69 | -105.13 | 5869 | |
| Green Mountain Falls | city | Colorado | United States | 38.93 | -105.02 | 7798 | |
| Green Mountain Village | city | Colorado | United States | 39.70 | -105.13 | 5869 | |
| Green Settlement | city | Colorado | United States | 38.78 | -104.89 | 7549 | |
| Green Valley | city | Colorado | United States | 39.78 | -105.09 | 5370 | |
| Green Valley Acres | city | Colorado | United States | 39.50 | -105.31 | 8566 | |
| Greenhorn | city | Colorado | United States | 37.91 | -104.85 | 6197 | |
| Greenland | city | Colorado | United States | 39.18 | -104.86 | 6998 | |
| Greenwood | city | Colorado | United States | 38.21 | -105.10 | 6709 | |
| Greenwood Village | city | Colorado | United States | 39.62 | -104.95 | 5869 | |
| Greystone | city | Colorado | United States | 40.61 | -108.67 | 6709 | |
| Griff | city | Colorado | United States | 40.78 | -103.01 | 4189 | |
| Griffth (historical) | city | Colorado | United States | 37.21 | -107.80 | 6876 | |
| Grote | city | Colorado | United States | 38.09 | -102.42 | 3543 | |
| Grover | city | Colorado | United States | 40.87 | -104.23 | 5085 | |
| Guadalupe | city | Colorado | United States | 37.10 | -106.03 | 7877 | |
| Guffey | city | Colorado | United States | 38.75 | -105.52 | 8625 | |
| Gulnare | city | Colorado | United States | 37.32 | -104.75 | 6998 | |
| Gun Club Estates | city | Colorado | United States | 39.70 | -104.71 | 5869 | |
| Gunbarrel | city | Colorado | United States | 40.07 | -105.19 | 5203 | |
| Gunnison | city | Colorado | United States | 38.55 | -106.93 | 7769 | |
| Guston (historical) | city | Colorado | United States | 37.92 | -107.69 | 11266 | |
| Gypsum | city | Colorado | United States | 39.65 | -106.95 | 6709 |