3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kalispell | 1 | 32,803 | 25,267 | 4.82% | 2,495 | 13 | City |
| Whitefish | 2 | 9,600 | 7,877 | 3.72% | 1,299 | 7 | City |
| Columbia Falls | 3 | 5,792 | 5,396 | 1.38% | 2,539 | 2 | City |
Kalispell is the largest city in Flathead County, with a population of 32,803.
Columbia Falls is the smallest city in Flathead County, with a population of 5,792.
There are 3 cities in Flathead County, Montana.