4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Philipsburg | 1 | 956 | 840 | 2.46% | 1,125 | 0.85 | Town |
| Drummond | 2 | 312 | 272 | 2.63% | 576 | 0.54 | Town |
| Maxville | 3 | 109 | 135 | -0.91% | 16 | 6.97 | CDP |
| Hall | 4 | 43 | 34 | 7.5% | 261 | 0.17 | CDP |
Philipsburg is the largest city in Granite County, with a population of 956.
Hall is the smallest city in Granite County.
There are 4 cities in Granite County, Montana.