Blaine County, Idaho
Located in Idaho, Blaine County has a population of 24,951 residents and a median age of 45.6 years, making it the #1,665 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 6.6%. The median home value is $735,300, and the median household income is $92,566, which is 23% above the national median.
Demographics
Blaine County has a population of 24,951, making it the #1,665 most populous county in the US. The median age is 45.6 years, which is 17.2% 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 Blaine County is $92,566, ranking #259 out of 3,222 counties — 23.2% above the national median. The poverty rate is 6.6% and unemployment stands at 2.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Blaine County is $735,300 (+160.8% vs national). Renters pay a median of $1,338/mo and the homeownership rate is 73.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Blaine County, 48.0% of adults age 25+ hold a bachelor's degree or higher, which is 42.5% above the national average, ranking #127 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Blaine County is 85.3 years. 13.1% of adults report poor or fair health and 14.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
9.6% of adults in Blaine County smoke , 25.5% are obese , and 20.3% report excessive drinking. The drug overdose death rate is 13.7 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 22.2 per 100,000. Motor vehicle deaths occur at a rate of 12.3 per 100,000.
Suicide Rate Trend
Families & Children
7.5% of children in Blaine County live in poverty . The teen birth rate is 8.9 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Blaine County is 83.7%. The mean commute time is 20.5 min, which is 25.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Blaine County voted Democratic with a margin of 31.7%. The vote was 64.4% Dem / 32.7% Rep. Compared to 2020, the margin shifted 5.1 toward Republicans .
Vote Share Over Time
About Blaine County, Idaho
Blaine County, Idaho has a total population of 24,951, making it the 1,665th most populous county in the United States. The median age in Blaine County is 45.6 years, which is 17.2% above the national median of 38.9 years.
The median household income in Blaine County is $92,566, which ranks #259 of 3,222 counties nationwide. This is 23.2% above the national median of $75,149. The poverty rate is 6.6%, lower than the national rate of 12.6%. The unemployment rate stands at 2.1%.
The median home value in Blaine County is $735,300, 160.8% above the national median. Renters in Blaine County pay a median gross rent of $1,338 per month. The homeownership rate is 73.5%, compared to the national rate of 64.4%.
In Blaine County, 48.0% of residents aged 25 and older hold a bachelor's degree or higher, 42.5% above the national average of 33.7%. Health insurance coverage stands at 91.0% of the population. The average commute time for workers is 20.5 min.
Blaine County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 71.9% of the population, followed by Hispanic or Latino (21.8%) and Two or More Races (4.8%).
All data for Blaine 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.