Stillwater County, Montana
Located in Montana, Stillwater County has a population of 9,182 residents and a median age of 46.7 years, making it the #2,551 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 8.3%. The median home value is $405,800, and the median household income is $84,732, which is 13% above the national median.
Demographics
Stillwater County has a population of 9,182, making it the #2,551 most populous county in the US. The median age is 46.7 years, which is 20.1% 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 Stillwater County is $84,732, ranking #431 out of 3,222 counties — 12.8% above the national median. The poverty rate is 8.3% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Stillwater County is $405,800 (+44.0% vs national). Renters pay a median of $961/mo and the homeownership rate is 82.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Stillwater County, 32.3% of adults age 25+ hold a bachelor's degree or higher, which is 4.3% below the national average, ranking #613 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Stillwater County is 77.5 years. 12.2% of adults report poor or fair health and 9.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
11.6% of adults in Stillwater County smoke , 31.9% are obese , and 25.8% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 28.1 per 100,000. Motor vehicle deaths occur at a rate of 19.7 per 100,000.
Suicide Rate Trend
Families & Children
8.7% of children in Stillwater County live in poverty . The teen birth rate is 7.9 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Stillwater County is 76.6%. The mean commute time is 32.8 min, which is 18.8% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Stillwater County voted Republican with a margin of 61.7%. The vote was 17.9% Dem / 79.6% Rep. Compared to 2020, the margin shifted 4.1 toward Republicans .
Vote Share Over Time
About Stillwater County, Montana
Stillwater County, Montana has a total population of 9,182, making it the 2,551st most populous county in the United States. The median age in Stillwater County is 46.7 years, which is 20.1% above the national median of 38.9 years.
The median household income in Stillwater County is $84,732, which ranks #431 of 3,222 counties nationwide. This is 12.8% above the national median of $75,149. The poverty rate is 8.3%, lower than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Stillwater County is $405,800, 44.0% above the national median. Renters in Stillwater County pay a median gross rent of $961 per month. The homeownership rate is 82.9%, compared to the national rate of 64.4%.
In Stillwater County, 32.3% of residents aged 25 and older hold a bachelor's degree or higher, 4.3% below the national average of 33.7%. Health insurance coverage stands at 94.8% of the population. The average commute time for workers is 32.8 min.
Stillwater County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.0% of the population, followed by Two or More Races (3.7%) and Hispanic or Latino (3.5%).
All data for Stillwater 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.