16 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Green Valley | Pennington County | 1,459 |
| Groton | Brown County | 1,333 |
| Gregory | Gregory County | 1,279 |
| Garretson | Minnehaha County | 1,154 |
| Gettysburg | Potter County | 1,051 |
| Gayville | Yankton County | 376 |
| Glendale Colony | Spink County | 254 |
| Gary | Deuel County | 233 |
| Goodwin | Deuel County | 151 |
| Geddes | Charles Mix County | 150 |
| Golden View Colony | Lake County | 134 |
| Glenham | Walworth County | 106 |
| Grenville | Day County | 45 |
| Garden City | Clark County | 36 |
| Grassland Colony | Brown County | 22 |
| Gann Valley | Buffalo County | 15 |