Santa Clara County, California
Located in California, Santa Clara County has a population of 1,902,047 residents and a median age of 38.1 years, making it the #18 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.1%. The median home value is $1.5M, and the median household income is $164,281, which is 119% above the national median.
Demographics
Santa Clara County has a population of 1,902,047, making it the #18 most populous county in the US. The median age is 38.1 years, which is 2.1% 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 Santa Clara County is $164,281, ranking #2 out of 3,222 counties — 118.6% above the national median. The poverty rate is 7.1% and unemployment stands at 4.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Santa Clara County is $1.5M (+428.8% vs national). Renters pay a median of $2,857/mo and the homeownership rate is 55.1%.
Median Home Value Trend
Rankings →Household Type
Education
In Santa Clara County, 56.5% of adults age 25+ hold a bachelor's degree or higher, which is 67.6% above the national average, ranking #45 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Santa Clara County is 83.8 years. 14.8% of adults report poor or fair health and 4.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
8.8% of adults in Santa Clara County smoke , 22.0% are obese , and 17.8% report excessive drinking. The drug overdose death rate is 17.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Santa Clara County is 2.4 per 100,000 and the suicide rate is 8.2 per 100,000. Motor vehicle deaths occur at a rate of 7.0 per 100,000.
Homicide Rate Trend
Families & Children
7.4% of children in Santa Clara County live in poverty and the infant mortality rate is 3.0 per 1,000 live births. The teen birth rate is 6.0 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Santa Clara County is 72.5%. The mean commute time is 29.1 min, which is 5.4% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Santa Clara County voted Democratic with a margin of 40.0%. The vote was 68.1% Dem / 28.1% Rep. Compared to 2020, the margin shifted 7.5 toward Republicans .
Vote Share Over Time
About Santa Clara County, California
Santa Clara County, California has a total population of 1,902,047, making it the 18th most populous county in the United States. The median age in Santa Clara County is 38.1 years, which is 2.1% below the national median of 38.9 years.
The median household income in Santa Clara County is $164,281, which ranks #2 of 3,222 counties nationwide. This is 118.6% above the national median of $75,149. The poverty rate is 7.1%, lower than the national rate of 12.6%. The unemployment rate stands at 4.9%.
The median home value in Santa Clara County is $1.5M, 428.8% above the national median. Renters in Santa Clara County pay a median gross rent of $2,857 per month. The homeownership rate is 55.1%, compared to the national rate of 64.4%.
In Santa Clara County, 56.5% of residents aged 25 and older hold a bachelor's degree or higher, 67.6% above the national average of 33.7%. Health insurance coverage stands at 96.1% of the population. The average commute time for workers is 29.1 min.
Santa Clara County is a diverse community. The largest racial or ethnic group is Asian (non-Hispanic) at 40.3% of the population, followed by White (non-Hispanic) (27.2%) and Hispanic or Latino (25.0%).
All data for Santa Clara County, California 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.