2 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 |
Philipsburg is the largest city in Granite County, with a population of 931.
Drummond is the smallest city in Granite County, with a population of 299.
There are 2 cities in Granite County, Montana.