Idaho County, Idaho
Located in Idaho, Idaho County has a population of 17,432 residents and a median age of 49.4 years, making it the #2,015 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.1%. The median home value is $310,200, and the median household income is $66,325, which is 12% below the national median.
Demographics
Idaho County has a population of 17,432, making it the #2,015 most populous county in the US. The median age is 49.4 years, which is 27.0% 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 Idaho County is $66,325, ranking #1,489 out of 3,222 counties — 11.7% below the national median. The poverty rate is 11.1% and unemployment stands at 3.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Idaho County is $310,200 (+10.0% vs national). Renters pay a median of $789/mo and the homeownership rate is 80.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Idaho County, 22.6% of adults age 25+ hold a bachelor's degree or higher, which is 33.0% below the national average, ranking #1,566 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Idaho County is 78.4 years. 19.3% of adults report poor or fair health and 11.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.7% of adults in Idaho County smoke , 32.6% are obese , and 20.6% report excessive drinking. The drug overdose death rate is 21.4 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 28.8 per 100,000. Motor vehicle deaths occur at a rate of 36.7 per 100,000.
Suicide Rate Trend
Families & Children
16.9% of children in Idaho County live in poverty . The teen birth rate is 15.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Idaho County is 72.4%. The mean commute time is 21.8 min, which is 21.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Idaho County voted Republican with a margin of 67.9%. The vote was 14.8% Dem / 82.7% Rep. Compared to 2020, the margin shifted 2.7 toward Republicans .
Vote Share Over Time
About Idaho County, Idaho
Idaho County, Idaho has a total population of 17,432, making it the 2,015th most populous county in the United States. The median age in Idaho County is 49.4 years, which is 27.0% above the national median of 38.9 years.
The median household income in Idaho County is $66,325, which ranks #1,489 of 3,222 counties nationwide. This is 11.7% below the national median of $75,149. The poverty rate is 11.1%, lower than the national rate of 12.6%. The unemployment rate stands at 3.7%.
The median home value in Idaho County is $310,200, 10.0% above the national median. Renters in Idaho County pay a median gross rent of $789 per month. The homeownership rate is 80.9%, compared to the national rate of 64.4%.
In Idaho County, 22.6% of residents aged 25 and older hold a bachelor's degree or higher, 33.0% below the national average of 33.7%. Health insurance coverage stands at 85.8% of the population. The average commute time for workers is 21.8 min.
Idaho County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.1% of the population, followed by Hispanic or Latino (4.0%) and Two or More Races (3.8%).
All data for Idaho 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.