4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Philipsburg | 1 | 931 | 838 | 1.97% | 1,095 | 1 | Town |
| Drummond | 2 | 299 | 271 | 1.7% | 552 | 1 | Town |
| Maxville | 3 | 109 | 135 | -0.91% | 16 | 7 | CDP |
| Hall | 4 | 43 | 34 | 7.5% | 261 | 0 | CDP |
Philipsburg is the largest city in Granite County, with a population of 931.
Hall is the smallest city in Granite County, with a population of 43.
There are 4 cities in Granite County, Montana.