12 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Garden City | Ada County | 13,095 |
| Gooding | Gooding County | 3,851 |
| Grangeville | Idaho County | 3,701 |
| Glenns Ferry | Elmore County | 1,289 |
| Groveland | Bingham County | 1,268 |
| Genesee | Latah County | 1,121 |
| Grace | Caribou County | 950 |
| Greenleaf | Canyon County | 787 |
| Georgetown | Bear Lake County | 510 |
| Grand View | Owyhee County | 469 |
| Garden Valley | Boise County | 413 |
| Gannett | Blaine County | 395 |