Cassia County, Idaho
Located in Idaho, Cassia County has a population of 25,483 residents and a median age of 33.2 years, making it the #1,639 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.4%. The median home value is $284,600, and the median household income is $70,830, which is 6% below the national median.
Demographics
Cassia County has a population of 25,483, making it the #1,639 most populous county in the US. The median age is 33.2 years, which is 14.7% 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 Cassia County is $70,830, ranking #1,137 out of 3,222 counties — 5.7% below the national median. The poverty rate is 12.4% and unemployment stands at 2.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Cassia County is $284,600 (+1.0% vs national). Renters pay a median of $1,000/mo and the homeownership rate is 68.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Cassia County, 21.3% of adults age 25+ hold a bachelor's degree or higher, which is 36.9% below the national average, ranking #1,777 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Cassia County is 76.9 years. 18.4% of adults report poor or fair health and 12.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
13.9% of adults in Cassia County smoke , 38.6% are obese , and 17.7% report excessive drinking. The drug overdose death rate is 21.3 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Cassia County is 6.1 per 100,000 and the suicide rate is 24.0 per 100,000. Motor vehicle deaths occur at a rate of 28.2 per 100,000.
Suicide Rate Trend
Families & Children
13.3% of children in Cassia County live in poverty . The teen birth rate is 25.2 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Cassia County is 64.9%. The mean commute time is 20.1 min, which is 27.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Cassia County voted Republican with a margin of 69.1%. The vote was 14.2% Dem / 83.3% Rep. Compared to 2020, the margin shifted 2.2 toward Republicans .
Vote Share Over Time
About Cassia County, Idaho
Cassia County, Idaho has a total population of 25,483, making it the 1,639th most populous county in the United States. The median age in Cassia County is 33.2 years, which is 14.7% below the national median of 38.9 years.
The median household income in Cassia County is $70,830, which ranks #1,137 of 3,222 counties nationwide. This is 5.7% below the national median of $75,149. The poverty rate is 12.4%, lower than the national rate of 12.6%. The unemployment rate stands at 2.4%.
The median home value in Cassia County is $284,600, 1.0% above the national median. Renters in Cassia County pay a median gross rent of $1,000 per month. The homeownership rate is 68.6%, compared to the national rate of 64.4%.
In Cassia County, 21.3% of residents aged 25 and older hold a bachelor's degree or higher, 36.9% below the national average of 33.7%. Health insurance coverage stands at 88.3% of the population. The average commute time for workers is 20.1 min.
Cassia County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 64.4% of the population, followed by Hispanic or Latino (30.1%) and Two or More Races (3.3%).
All data for Cassia 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.