Benton County, Washington
Located in Washington, Benton County has a population of 212,905 residents and a median age of 36.3 years, making it the #327 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.0%. The median home value is $407,800, and the median household income is $89,874, which is 20% above the national median.
Demographics
Benton County has a population of 212,905, making it the #327 most populous county in the US. The median age is 36.3 years, which is 6.7% 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 Benton County is $89,874, ranking #301 out of 3,222 counties — 19.6% above the national median. The poverty rate is 11.0% and unemployment stands at 5.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Benton County is $407,800 (+44.7% vs national). Renters pay a median of $1,306/mo and the homeownership rate is 67.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Benton County, 33.2% of adults age 25+ hold a bachelor's degree or higher, which is 1.5% below the national average, ranking #561 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Benton County is 77.8 years. 17.1% of adults report poor or fair health and 8.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.0% of adults in Benton County smoke , 40.0% are obese , and 21.1% report excessive drinking. The drug overdose death rate is 20.3 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Benton County is 4.0 per 100,000 and the suicide rate is 16.0 per 100,000. Motor vehicle deaths occur at a rate of 8.8 per 100,000.
Homicide Rate Trend
Families & Children
12.9% of children in Benton County live in poverty and the infant mortality rate is 5.1 per 1,000 live births. The teen birth rate is 15.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Benton County is 76.2%. The mean commute time is 24.5 min, which is 11.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Benton County voted Republican with a margin of 21.9%. The vote was 37.7% Dem / 59.6% Rep. Compared to 2020, the margin shifted 0.9 toward Republicans .
Vote Share Over Time
About Benton County, Washington
Benton County, Washington has a total population of 212,905, making it the 327th most populous county in the United States. The median age in Benton County is 36.3 years, which is 6.7% below the national median of 38.9 years.
The median household income in Benton County is $89,874, which ranks #301 of 3,222 counties nationwide. This is 19.6% above the national median of $75,149. The poverty rate is 11.0%, lower than the national rate of 12.6%. The unemployment rate stands at 5.3%.
The median home value in Benton County is $407,800, 44.7% above the national median. Renters in Benton County pay a median gross rent of $1,306 per month. The homeownership rate is 67.6%, compared to the national rate of 64.4%.
In Benton County, 33.2% of residents aged 25 and older hold a bachelor's degree or higher, 1.5% below the national average of 33.7%. Health insurance coverage stands at 92.1% of the population. The average commute time for workers is 24.5 min.
Benton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 64.6% of the population, followed by Hispanic or Latino (25.6%) and Two or More Races (3.9%).
All data for Benton County, Washington 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.