| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Gale | city | Idaho | United States | 43.77 | -111.72 | 5262 | |
| Galena | city | Idaho | United States | 43.87 | -114.66 | 7549 | |
| Gannett | city | Idaho | United States | 43.36 | -114.18 | 5029 | |
| Garden City | city | Idaho | United States | 43.62 | -116.24 | 2700 | |
| Garden City (historical) | city | Idaho | United States | 44.51 | -114.22 | 5150 | |
| Garden Valley | city | Idaho | United States | 44.09 | -115.95 | 3464 | |
| Gardena | city | Idaho | United States | 43.98 | -116.19 | 2798 | |
| Garfield | city | Idaho | United States | 43.64 | -111.96 | 5029 | |
| Garfield | city | Idaho | United States | 48.18 | -116.43 | 2509 | |
| Garrard Ranch | city | Idaho | United States | 42.32 | -114.00 | 4583 | |
| Garwood | city | Idaho | United States | 47.83 | -116.78 | 2509 | |
| Gay | city | Idaho | United States | 43.05 | -112.12 | 5869 | |
| Gayway Corner | city | Idaho | United States | 44.03 | -116.92 | 2509 | |
| Gem | city | Idaho | United States | 47.51 | -115.87 | 3717 | |
| Genesee | city | Idaho | United States | 46.55 | -116.93 | 2700 | |
| Geneva | city | Idaho | United States | 42.36 | -111.07 | 6184 | |
| Gentry | city | Idaho | United States | 47.47 | -115.90 | 3349 | |
| Georgetown | city | Idaho | United States | 42.48 | -111.37 | 6118 | |
| German Settlement | city | Idaho | United States | 46.42 | -116.50 | 3349 | |
| Gerrard | city | Idaho | United States | 43.38 | -112.04 | 5029 | |
| Gerrit | city | Idaho | United States | 44.21 | -111.27 | 5902 | |
| Gibbonsville | city | Idaho | United States | 45.56 | -113.92 | 4599 | |
| Gibbs | city | Idaho | United States | 47.69 | -116.80 | 2509 | |
| Gibler | city | Idaho | United States | 45.74 | -115.39 | 4399 | |
| Gibson | city | Idaho | United States | 43.10 | -112.42 | 4530 | |
| Gifford | city | Idaho | United States | 46.44 | -116.56 | 3349 | |
| Gilmore | city | Idaho | United States | 44.46 | -113.27 | 7549 | |
| Gimlet | city | Idaho | United States | 43.60 | -114.35 | 5869 | |
| Givens Hot Springs | city | Idaho | United States | 43.42 | -116.71 | 2509 | |
| Giveout | city | Idaho | United States | 42.42 | -111.16 | 6984 | |
| Glencoe | city | Idaho | United States | 42.01 | -111.41 | 5921 | |
| Glendale | city | Idaho | United States | 42.13 | -111.70 | 5196 | |
| Glendale | city | Idaho | United States | 44.83 | -116.41 | 3582 | |
| Glengary | city | Idaho | United States | 48.22 | -116.37 | 2509 | |
| Glenns Ferry | city | Idaho | United States | 42.95 | -115.30 | 2598 | |
| Glenwood | city | Idaho | United States | 46.24 | -115.83 | 3349 | |
| Godwin | city | Idaho | United States | 42.51 | -114.57 | 4189 | |
| Golconda | city | Idaho | United States | 47.47 | -115.87 | 3349 | |
| Gold Creek | city | Idaho | United States | 47.14 | -115.41 | 4199 | |
| Gold Point | city | Idaho | United States | 45.78 | -115.39 | 4199 | |
| Goldburg | city | Idaho | United States | 44.39 | -113.65 | 6230 | |
| Golden | city | Idaho | United States | 45.81 | -115.68 | 3776 | |
| Good Grief | city | Idaho | United States | 48.95 | -116.18 | 2700 | |
| Gooding | city | Idaho | United States | 42.94 | -114.71 | 3595 | |
| Goodrich | city | Idaho | United States | 44.65 | -116.56 | 2936 | |
| Goshen | city | Idaho | United States | 43.31 | -112.08 | 5029 | |
| Goshen Junction | city | Idaho | United States | 43.31 | -112.18 | 4599 | |
| Grace | city | Idaho | United States | 42.58 | -111.73 | 5869 | |
| Graham (historical) | city | Idaho | United States | 43.97 | -115.27 | 5869 | |
| Grainville | city | Idaho | United States | 44.03 | -111.37 | 5869 | |
| Grand Junction | city | Idaho | United States | 47.73 | -116.97 | 2509 | |
| Grand View | city | Idaho | United States | 42.99 | -116.09 | 2509 | |
| Grandjean | city | Idaho | United States | 44.16 | -115.17 | 5869 | |
| Grandview | city | Idaho | United States | 43.05 | -112.79 | 4422 | |
| Grangeville | city | Idaho | United States | 45.93 | -116.12 | 3467 | |
| Granite | city | Idaho | United States | 48.09 | -116.43 | 2509 | |
| Granite | city | Idaho | United States | 48.01 | -116.67 | 2509 | |
| Granite | city | Idaho | United States | 43.94 | -115.97 | 4294 | |
| Grant | city | Idaho | United States | 43.64 | -112.01 | 5029 | |
| Grasmere | city | Idaho | United States | 42.38 | -115.88 | 5065 | |
| Gray | city | Idaho | United States | 43.05 | -111.38 | 6709 | |
| Green | city | Idaho | United States | 45.45 | -115.95 | 2703 | |
| Greencreek | city | Idaho | United States | 46.11 | -116.26 | 3349 | |
| Greenleaf | city | Idaho | United States | 43.67 | -116.82 | 2509 | |
| Greentimber (historical) | city | Idaho | United States | 44.09 | -111.28 | 5869 | |
| Greenwood | city | Idaho | United States | 42.58 | -114.05 | 4189 | |
| Greer | city | Idaho | United States | 46.39 | -116.18 | 1669 | |
| Greys Landing (historical) | city | Idaho | United States | 42.13 | -114.73 | 5029 | |
| Grimes Pass | city | Idaho | United States | 44.04 | -115.86 | 4189 | |
| Gross | city | Idaho | United States | 44.31 | -116.31 | 3497 | |
| Grouse | city | Idaho | United States | 43.69 | -113.61 | 6141 | |
| Groveland | city | Idaho | United States | 43.22 | -112.37 | 4481 | |
| Guffey | city | Idaho | United States | 43.30 | -116.55 | 2509 | |
| Gurney | city | Idaho | United States | 46.43 | -116.95 | 1033 | |
| Guyaz | city | Idaho | United States | 43.48 | -111.65 | 5948 | |
| Gwenford | city | Idaho | United States | 42.14 | -112.33 | 4429 |