Jerome County, Idaho
Located in Idaho, Jerome County has a population of 25,173 residents and a median age of 34.0 years, making it the #1,652 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.6%. The median home value is $271,800, and the median household income is $71,724, which is 5% below the national median.
Demographics
Jerome County has a population of 25,173, making it the #1,652 most populous county in the US. The median age is 34.0 years, which is 12.6% 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 Jerome County is $71,724, ranking #1,065 out of 3,222 counties — 4.6% below the national median. The poverty rate is 12.6% and unemployment stands at 3.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Jerome County is $271,800 (-3.6% vs national). Renters pay a median of $966/mo and the homeownership rate is 75.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Jerome County, 14.0% of adults age 25+ hold a bachelor's degree or higher, which is 58.5% below the national average, ranking #2,934 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Jerome County is 76.4 years. 22.1% of adults report poor or fair health and 16.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.8% of adults in Jerome County smoke , 40.1% are obese , and 17.4% report excessive drinking. The drug overdose death rate is 13.4 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 17.8 per 100,000. Motor vehicle deaths occur at a rate of 24.8 per 100,000.
Suicide Rate Trend
Families & Children
14.2% of children in Jerome County live in poverty and the infant mortality rate is 7.9 per 1,000 live births. The teen birth rate is 33.2 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Jerome County is 57.7%. The mean commute time is 23.1 min, which is 16.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Jerome County voted Republican with a margin of 53.8%. The vote was 21.9% Dem / 75.7% Rep. Compared to 2020, the margin shifted 4.6 toward Republicans .
Vote Share Over Time
About Jerome County, Idaho
Jerome County, Idaho has a total population of 25,173, making it the 1,652nd most populous county in the United States. The median age in Jerome County is 34.0 years, which is 12.6% below the national median of 38.9 years.
The median household income in Jerome County is $71,724, which ranks #1,065 of 3,222 counties nationwide. This is 4.6% below the national median of $75,149. The poverty rate is 12.6%, lower than the national rate of 12.6%. The unemployment rate stands at 3.6%.
The median home value in Jerome County is $271,800, 3.6% below the national median. Renters in Jerome County pay a median gross rent of $966 per month. The homeownership rate is 75.2%, compared to the national rate of 64.4%.
In Jerome County, 14.0% of residents aged 25 and older hold a bachelor's degree or higher, 58.5% below the national average of 33.7%. Health insurance coverage stands at 85.2% of the population. The average commute time for workers is 23.1 min.
Jerome County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 56.8% of the population, followed by Hispanic or Latino (39.2%) and Two or More Races (3.6%).
All data for Jerome 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.