Granite County, Montana
Located in Montana, Granite County has a population of 3,462 residents and a median age of 53.0 years, making it the #3,003 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.2%. The median home value is $352,700, and the median household income is $59,265, which is 21% below the national median.
Demographics
Granite County has a population of 3,462, making it the #3,003 most populous county in the US. The median age is 53.0 years, which is 36.2% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Granite County is $59,265, ranking #2,152 out of 3,222 counties — 21.1% below the national median. The poverty rate is 10.2% and unemployment stands at 3.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Granite County is $352,700 (+25.1% vs national). Renters pay a median of $675/mo and the homeownership rate is 77.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Granite County, 34.2% of adults age 25+ hold a bachelor's degree or higher, which is 1.5% above the national average, ranking #509 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Granite County is 80.0 years. 17.1% of adults report poor or fair health and 14.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.4% of adults in Granite County smoke , 32.4% are obese , and 23.9% report excessive drinking.
Adult Smoking Trend
Safety
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Families & Children
16.8% of children in Granite County live in poverty .
Child Poverty Trend
Civic & Transportation
Voter turnout in Granite County is 77.0%. The mean commute time is 30.9 min, which is 12.1% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Granite County voted Republican with a margin of 44.0%. The vote was 26.6% Dem / 70.6% Rep. Compared to 2020, the margin shifted 6.9 toward Republicans .
Vote Share Over Time
About Granite County, Montana
Granite County, Montana has a total population of 3,462, making it the 3,003rd most populous county in the United States. The median age in Granite County is 53.0 years, which is 36.2% above the national median of 38.9 years.
The median household income in Granite County is $59,265, which ranks #2,152 of 3,222 counties nationwide. This is 21.1% below the national median of $75,149. The poverty rate is 10.2%, lower than the national rate of 12.6%. The unemployment rate stands at 3.7%.
The median home value in Granite County is $352,700, 25.1% above the national median. Renters in Granite County pay a median gross rent of $675 per month. The homeownership rate is 77.9%, compared to the national rate of 64.4%.
In Granite County, 34.2% of residents aged 25 and older hold a bachelor's degree or higher, 1.5% above the national average of 33.7%. Health insurance coverage stands at 91.5% of the population. The average commute time for workers is 30.9 min.
Granite County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 90.0% of the population, followed by Two or More Races (4.0%) and Hispanic or Latino (2.6%).
All data for Granite County, Montana comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.