5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wolf Point | 1 | 2,448 | 2,670 | -1.49% | 2,772 | 1 | City |
| Poplar | 2 | 700 | 765 | -1.55% | 2,518 | 0 | City |
| Culbertson | 3 | 685 | 748 | -1.44% | 597 | 1 | Town |
| Bainville | 4 | 254 | 275 | -1.17% | 201 | 1 | Town |
| Froid | 5 | 180 | 195 | -1.1% | 288 | 1 | Town |
Wolf Point is the largest city in Roosevelt County, with a population of 2,448.
Froid is the smallest city in Roosevelt County, with a population of 180.
There are 5 cities in Roosevelt County, Montana.