16 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Green Valley | Pennington County | 1,459 |
| Groton | Brown County | 1,334 |
| Gregory | Gregory County | 1,216 |
| Garretson | Minnehaha County | 1,143 |
| Gettysburg | Potter County | 1,051 |
| Gayville | Yankton County | 376 |
| Glendale Colony | Spink County | 254 |
| Gary | Deuel County | 240 |
| Goodwin | Deuel County | 150 |
| Geddes | Charles Mix County | 148 |
| Golden View Colony | Lake County | 134 |
| Glenham | Walworth County | 107 |
| Grenville | Day County | 46 |
| Garden City | Clark County | 37 |
| Grassland Colony | Brown County | 22 |
| Gann Valley | Buffalo County | 15 |