Twin Falls County, Idaho
Located in Idaho, Twin Falls County has a population of 93,734 residents and a median age of 36.1 years, making it the #653 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.5%. The median home value is $337,900, and the median household income is $67,409, which is 10% below the national median.
Demographics
Twin Falls County has a population of 93,734, making it the #653 most populous county in the US. The median age is 36.1 years, which is 7.2% 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 Twin Falls County is $67,409, ranking #1,393 out of 3,222 counties — 10.3% below the national median. The poverty rate is 11.5% and unemployment stands at 3.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Twin Falls County is $337,900 (+19.9% vs national). Renters pay a median of $1,089/mo and the homeownership rate is 70.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Twin Falls County, 23.5% of adults age 25+ hold a bachelor's degree or higher, which is 30.2% below the national average, ranking #1,425 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Twin Falls County is 76.0 years. 17.3% of adults report poor or fair health and 11.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
13.4% of adults in Twin Falls County smoke , 36.5% are obese , and 17.0% report excessive drinking. The drug overdose death rate is 24.1 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Twin Falls County is 2.9 per 100,000 and the suicide rate is 25.3 per 100,000. Motor vehicle deaths occur at a rate of 19.2 per 100,000.
Homicide Rate Trend
Families & Children
12.7% of children in Twin Falls County live in poverty and the infant mortality rate is 3.9 per 1,000 live births. The teen birth rate is 19.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Twin Falls County is 62.8%. The mean commute time is 19.9 min, which is 27.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Twin Falls County voted Republican with a margin of 48.8%. The vote was 24.3% Dem / 73.1% Rep. Compared to 2020, the margin shifted 3.8 toward Republicans .
Vote Share Over Time
About Twin Falls County, Idaho
Twin Falls County, Idaho has a total population of 93,734, making it the 653rd most populous county in the United States. The median age in Twin Falls County is 36.1 years, which is 7.2% below the national median of 38.9 years.
The median household income in Twin Falls County is $67,409, which ranks #1,393 of 3,222 counties nationwide. This is 10.3% below the national median of $75,149. The poverty rate is 11.5%, lower than the national rate of 12.6%. The unemployment rate stands at 3.0%.
The median home value in Twin Falls County is $337,900, 19.9% above the national median. Renters in Twin Falls County pay a median gross rent of $1,089 per month. The homeownership rate is 70.5%, compared to the national rate of 64.4%.
In Twin Falls County, 23.5% of residents aged 25 and older hold a bachelor's degree or higher, 30.2% below the national average of 33.7%. Health insurance coverage stands at 89.8% of the population. The average commute time for workers is 19.9 min.
Twin Falls County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 75.3% of the population, followed by Hispanic or Latino (18.0%) and Two or More Races (3.7%).
All data for Twin Falls 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.