Boundary County, Idaho
Located in Idaho, Boundary County has a population of 13,172 residents and a median age of 43.7 years, making it the #2,276 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.6%. The median home value is $410,500, and the median household income is $67,237, which is 11% below the national median.
Demographics
Boundary County has a population of 13,172, making it the #2,276 most populous county in the US. The median age is 43.7 years, which is 12.3% 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 Boundary County is $67,237, ranking #1,410 out of 3,222 counties — 10.5% below the national median. The poverty rate is 13.6% and unemployment stands at 2.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Boundary County is $410,500 (+45.6% vs national). Renters pay a median of $877/mo and the homeownership rate is 75.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Boundary County, 24.0% of adults age 25+ hold a bachelor's degree or higher, which is 28.6% below the national average, ranking #1,362 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Boundary County is 78.1 years. 16.5% of adults report poor or fair health and 13.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.1% of adults in Boundary County smoke , 30.9% are obese , and 18.0% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 22.9 per 100,000. Motor vehicle deaths occur at a rate of 15.1 per 100,000.
Suicide Rate Trend
Families & Children
16.7% of children in Boundary County live in poverty . The teen birth rate is 17.7 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Boundary County is 69.2%. The mean commute time is 21.1 min, which is 23.5% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Boundary County voted Republican with a margin of 65.4%. The vote was 16.1% Dem / 81.5% Rep. Compared to 2020, the margin shifted 6.5 toward Republicans .
Vote Share Over Time
About Boundary County, Idaho
Boundary County, Idaho has a total population of 13,172, making it the 2,276th most populous county in the United States. The median age in Boundary County is 43.7 years, which is 12.3% above the national median of 38.9 years.
The median household income in Boundary County is $67,237, which ranks #1,410 of 3,222 counties nationwide. This is 10.5% below the national median of $75,149. The poverty rate is 13.6%, higher than the national rate of 12.6%. The unemployment rate stands at 2.6%.
The median home value in Boundary County is $410,500, 45.6% above the national median. Renters in Boundary County pay a median gross rent of $877 per month. The homeownership rate is 75.3%, compared to the national rate of 64.4%.
In Boundary County, 24.0% of residents aged 25 and older hold a bachelor's degree or higher, 28.6% below the national average of 33.7%. Health insurance coverage stands at 86.0% of the population. The average commute time for workers is 21.1 min.
Boundary County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 81.5% of the population, followed by Two or More Races (7.7%) and Hispanic or Latino (5.7%).
All data for Boundary County, Idaho 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.