Bannock County, Idaho
Located in Idaho, Bannock County has a population of 89,454 residents and a median age of 35.2 years, making it the #673 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.3%. The median home value is $300,700, and the median household income is $66,499, which is 12% below the national median.
Demographics
Bannock County has a population of 89,454, making it the #673 most populous county in the US. The median age is 35.2 years, which is 9.5% 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 Bannock County is $66,499, ranking #1,467 out of 3,222 counties — 11.5% below the national median. The poverty rate is 12.3% and unemployment stands at 4.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Bannock County is $300,700 (+6.7% vs national). Renters pay a median of $960/mo and the homeownership rate is 69.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Bannock County, 30.6% of adults age 25+ hold a bachelor's degree or higher, which is 9.1% below the national average, ranking #722 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Bannock County is 75.2 years. 16.8% of adults report poor or fair health and 7.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
13.9% of adults in Bannock County smoke , 36.8% are obese , and 17.0% report excessive drinking. The drug overdose death rate is 27.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Bannock County is 2.8 per 100,000 and the suicide rate is 31.9 per 100,000. Motor vehicle deaths occur at a rate of 11.4 per 100,000.
Homicide Rate Trend
Families & Children
12.2% of children in Bannock County live in poverty and the infant mortality rate is 5.4 per 1,000 live births. The teen birth rate is 15.1 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Bannock County is 63.4%. The mean commute time is 19.6 min, which is 28.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Bannock County voted Republican with a margin of 25.1%. The vote was 35.8% Dem / 60.9% Rep. Compared to 2020, the margin shifted 3.2 toward Republicans .
Vote Share Over Time
About Bannock County, Idaho
Bannock County, Idaho has a total population of 89,454, making it the 673rd most populous county in the United States. The median age in Bannock County is 35.2 years, which is 9.5% below the national median of 38.9 years.
The median household income in Bannock County is $66,499, which ranks #1,467 of 3,222 counties nationwide. This is 11.5% below the national median of $75,149. The poverty rate is 12.3%, lower than the national rate of 12.6%. The unemployment rate stands at 4.3%.
The median home value in Bannock County is $300,700, 6.7% above the national median. Renters in Bannock County pay a median gross rent of $960 per month. The homeownership rate is 69.5%, compared to the national rate of 64.4%.
In Bannock County, 30.6% of residents aged 25 and older hold a bachelor's degree or higher, 9.1% below the national average of 33.7%. Health insurance coverage stands at 93.5% of the population. The average commute time for workers is 19.6 min.
Bannock County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 80.3% of the population, followed by Hispanic or Latino (9.9%) and Two or More Races (4.1%).
All data for Bannock 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.