Big Horn County, Montana
Located in Montana, Big Horn County has a population of 12,891 residents and a median age of 31.9 years, making it the #2,289 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 22.1%. The median home value is $143,400, and the median household income is $58,750, which is 22% below the national median.
Demographics
Big Horn County has a population of 12,891, making it the #2,289 most populous county in the US. The median age is 31.9 years, which is 18.0% below 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 Big Horn County is $58,750, ranking #2,197 out of 3,222 counties — 21.8% below the national median. The poverty rate is 22.1% and unemployment stands at 13.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Big Horn County is $143,400 (-49.1% vs national). Renters pay a median of $697/mo and the homeownership rate is 66.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Big Horn County, 17.8% of adults age 25+ hold a bachelor's degree or higher, which is 47.1% below the national average, ranking #2,381 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Big Horn County is 64.6 years. 25.3% of adults report poor or fair health and 12.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
23.4% of adults in Big Horn County smoke , 41.4% are obese , and 19.9% report excessive drinking.
Adult Smoking Trend
Safety
The homicide rate in Big Horn County is 23.9 per 100,000 and the suicide rate is 38.8 per 100,000. Motor vehicle deaths occur at a rate of 90.0 per 100,000.
Homicide Rate Trend
Families & Children
23.8% of children in Big Horn County live in poverty and the infant mortality rate is 15.3 per 1,000 live births. The teen birth rate is 51.6 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Big Horn County is 54.5%. The mean commute time is 21.6 min, which is 21.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Big Horn County voted Republican with a margin of 1.7%. The vote was 47.2% Dem / 48.9% Rep. Compared to 2020, the margin shifted 7.7 toward Republicans .
Vote Share Over Time
About Big Horn County, Montana
Big Horn County, Montana has a total population of 12,891, making it the 2,289th most populous county in the United States. The median age in Big Horn County is 31.9 years, which is 18.0% below the national median of 38.9 years.
The median household income in Big Horn County is $58,750, which ranks #2,197 of 3,222 counties nationwide. This is 21.8% below the national median of $75,149. The poverty rate is 22.1%, higher than the national rate of 12.6%. The unemployment rate stands at 13.2%.
The median home value in Big Horn County is $143,400, 49.1% below the national median. Renters in Big Horn County pay a median gross rent of $697 per month. The homeownership rate is 66.7%, compared to the national rate of 64.4%.
In Big Horn County, 17.8% of residents aged 25 and older hold a bachelor's degree or higher, 47.1% below the national average of 33.7%. Health insurance coverage stands at 78.3% of the population. The average commute time for workers is 21.6 min.
Big Horn County is a diverse community. The largest racial or ethnic group is American Indian (non-Hispanic) at 66.2% of the population, followed by White (non-Hispanic) (27.0%) and Hispanic or Latino (4.7%).
All data for Big Horn 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.