4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Great Falls | 1 | 59,903 | 60,453 | -0.18% | 2,590 | 23 | City |
| Cascade | 2 | 575 | 593 | -0.69% | 877 | 1 | Town |
| Belt | 3 | 518 | 503 | 0.58% | 1,533 | 0 | Town |
| Neihart | 4 | 41 | 43 | -2.38% | 21 | 2 | Town |
Great Falls is the largest city in Cascade County, with a population of 59,903.
Neihart is the smallest city in Cascade County, with a population of 41.
There are 4 cities in Cascade County, Montana.