2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Big Timber | 1 | 1,715 | 1,642 | 0.88% | 1,755 | 0.98 | City |
| Greycliff | 2 | 86 | 133 | -2.27% | 169 | 0.51 | CDP |
Big Timber is the largest city in Sweet Grass County, with a population of 1,715.
Greycliff is the smallest city in Sweet Grass County.
There are 2 cities in Sweet Grass County, Montana.