Bonneville County, Idaho
Located in Idaho, Bonneville County has a population of 129,523 residents and a median age of 33.6 years, making it the #508 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 9.8%. The median home value is $368,800, and the median household income is $79,068, which is 5% above the national median.
Demographics
Bonneville County has a population of 129,523, making it the #508 most populous county in the US. The median age is 33.6 years, which is 13.6% 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 Bonneville County is $79,068, ranking #618 out of 3,222 counties — 5.2% above the national median. The poverty rate is 9.8% and unemployment stands at 4.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Bonneville County is $368,800 (+30.8% vs national). Renters pay a median of $1,133/mo and the homeownership rate is 71.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Bonneville County, 33.1% of adults age 25+ hold a bachelor's degree or higher, which is 1.8% below the national average, ranking #566 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Bonneville County is 76.9 years. 16.0% of adults report poor or fair health and 9.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.8% of adults in Bonneville County smoke , 35.2% are obese , and 13.7% report excessive drinking. The drug overdose death rate is 21.3 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Bonneville County is 2.3 per 100,000 and the suicide rate is 25.4 per 100,000. Motor vehicle deaths occur at a rate of 11.9 per 100,000.
Homicide Rate Trend
Families & Children
12.0% of children in Bonneville County live in poverty and the infant mortality rate is 6.4 per 1,000 live births. The teen birth rate is 16.7 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Bonneville County is 69.3%. The mean commute time is 22.6 min, which is 18.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Bonneville County voted Republican with a margin of 45.4%. The vote was 25.6% Dem / 71% Rep. Compared to 2020, the margin shifted 1.8 toward Republicans .
Vote Share Over Time
About Bonneville County, Idaho
Bonneville County, Idaho has a total population of 129,523, making it the 508th most populous county in the United States. The median age in Bonneville County is 33.6 years, which is 13.6% below the national median of 38.9 years.
The median household income in Bonneville County is $79,068, which ranks #618 of 3,222 counties nationwide. This is 5.2% above the national median of $75,149. The poverty rate is 9.8%, lower than the national rate of 12.6%. The unemployment rate stands at 4.5%.
The median home value in Bonneville County is $368,800, 30.8% above the national median. Renters in Bonneville County pay a median gross rent of $1,133 per month. The homeownership rate is 71.7%, compared to the national rate of 64.4%.
In Bonneville County, 33.1% of residents aged 25 and older hold a bachelor's degree or higher, 1.8% below the national average of 33.7%. Health insurance coverage stands at 91.6% of the population. The average commute time for workers is 22.6 min.
Bonneville County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 80.2% of the population, followed by Hispanic or Latino (14.5%) and Two or More Races (3.3%).
All data for Bonneville 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.