| Population | 56 |
| Square Miles | 55.41 |
| Population Density | 1.01 |
| Median Age | 40 |
| Median Household Income | $30,208 |
| Per Capita Income | $14,169 |
| Median Rent | $350 |
| Percent Renters | 24% |
| Median Belfry, MT 59008 For Sale Price: | $525,000 |
| Studio For Sale Median Price: | $225,000 |
| 3 Bedroom For Sale Median Price: | $525,000 |
| 4 Bedroom For Sale Median Price: | $389,000 |