4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Great Falls | 1 | 59,793 | 60,453 | -0.18% | 2,585 | 23 | City |
| Cascade | 2 | 572 | 593 | -0.52% | 872 | 1 | Town |
| Belt | 3 | 521 | 503 | 0.58% | 1,541 | 0 | Town |
| Neihart | 4 | 41 | 43 | 0% | 21 | 2 | Town |
Great Falls is the largest city in Cascade County, with a population of 59,793.
Neihart is the smallest city in Cascade County, with a population of 41.
There are 4 cities in Cascade County, Montana.