Stanislaus County, California
Located in California, Stanislaus County has a population of 553,990 residents and a median age of 34.9 years, making it the #127 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.5%. The median home value is $450,100, and the median household income is $81,468, which is 8% above the national median.
Demographics
Stanislaus County has a population of 553,990, making it the #127 most populous county in the US. The median age is 34.9 years, which is 10.3% 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 Stanislaus County is $81,468, ranking #525 out of 3,222 counties — 8.4% above the national median. The poverty rate is 13.5% and unemployment stands at 8.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Stanislaus County is $450,100 (+59.7% vs national). Renters pay a median of $1,623/mo and the homeownership rate is 61.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Stanislaus County, 19.6% of adults age 25+ hold a bachelor's degree or higher, which is 41.7% below the national average, ranking #2,062 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Stanislaus County is 75.4 years. 19.6% of adults report poor or fair health and 7.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.8% of adults in Stanislaus County smoke , 34.7% are obese , and 21.1% report excessive drinking. The drug overdose death rate is 28.7 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Stanislaus County is 3.9 per 100,000 and the suicide rate is 11.5 per 100,000. Motor vehicle deaths occur at a rate of 17.3 per 100,000.
Homicide Rate Trend
Families & Children
15.9% of children in Stanislaus County live in poverty and the infant mortality rate is 4.8 per 1,000 live births. The teen birth rate is 16.7 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Stanislaus County is 62.5%. The mean commute time is 32.4 min, which is 17.6% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Stanislaus County voted Republican with a margin of 11.0%. The vote was 43.2% Dem / 54.2% Rep. Compared to 2020, the margin shifted 11.8 toward Republicans .
Vote Share Over Time
About Stanislaus County, California
Stanislaus County, California has a total population of 553,990, making it the 127th most populous county in the United States. The median age in Stanislaus County is 34.9 years, which is 10.3% below the national median of 38.9 years.
The median household income in Stanislaus County is $81,468, which ranks #525 of 3,222 counties nationwide. This is 8.4% above the national median of $75,149. The poverty rate is 13.5%, higher than the national rate of 12.6%. The unemployment rate stands at 8.0%.
The median home value in Stanislaus County is $450,100, 59.7% above the national median. Renters in Stanislaus County pay a median gross rent of $1,623 per month. The homeownership rate is 61.2%, compared to the national rate of 64.4%.
In Stanislaus County, 19.6% of residents aged 25 and older hold a bachelor's degree or higher, 41.7% below the national average of 33.7%. Health insurance coverage stands at 94.4% of the population. The average commute time for workers is 32.4 min.
Stanislaus County is a diverse community. The largest racial or ethnic group is Hispanic or Latino at 50.0% of the population, followed by White (non-Hispanic) (36.3%) and Asian (non-Hispanic) (5.9%).
All data for Stanislaus 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.