Granite County's estimated 2025 population is 3,791 with a growth rate of 2.65% 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 23.36% since that time.
Data after 2023 is projected based on recent change
The racial composition of Granite County includes 92.72% White, and smaller percentages for Native American, Black or African American, Asian, other race, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Native American
Black or African American
Asian
Other race
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,170 | 92.72% |
| Two or more races | 103 | 3.01% |
| Native American | 76 | 2.22% |
| Black or African American | 25 | 0.73% |
| Asian | 22 | 0.64% |
| Other race | 22 | 0.64% |
| Native Hawaiian or Pacific Islander | 1 | 0.03% |
Married
Widowed
Divorced
Separated
Never Married
Granite County's average per capita income is $35,747. Household income levels show a median of $54,646. The poverty rate stands at 10.43%.
Name | Median | Mean |
|---|---|---|
| Married Families | $73,878 | - |
| Families | $72,596 | $98,793 |
| Households | $54,646 | $80,224 |
| Non Families | $34,315 | $44,649 |
Average Income
Median Household Income
Poverty Rate