Granite County's estimated 2026 population is 3,677 with a growth rate of 0.52% in the past year according to the most recent United States census data. Granite County is the 40th largest county in Montana. The 2010 population was 3,073 and has seen a growth of 19.66% since that time.
Data after 2023 is projected based on recent change
Overall: 53 years
Female: 51.7 years
Male: 54.8 years
There are 2,953 adults, (1,082 of whom are seniors) in Granite County.
Female: 1,707 (49.3%)
Male: 1,755 (50.7%)
The racial composition of Granite County includes 90.53% White, and smaller percentages for Native American, Asian, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,134 | 90.53% |
| Two or more races | 205 | 5.92% |
| Native American | 63 | 1.82% |
| Asian | 32 | 0.92% |
| Other race | 17 | 0.49% |
| Black or African American | 9 | 0.26% |
| Native Hawaiian or Pacific Islander | 2 | 0.06% |
Granite County's average per capita income is $40,000. Household income levels show a median of $59,265. The poverty rate stands at 10.17%.
Name | Median | Mean |
|---|---|---|
| Married Families | $77,305 | - |
| Families | $76,650 | $100,557 |
| Households | $59,265 | $83,119 |
| Non Families | $35,543 | $46,944 |
Average Income
Median Household Income
Poverty Rate