Mariposa County, California
Located in California, Mariposa County has a population of 17,082 residents and a median age of 51.2 years, making it the #2,031 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 14.0%. The median home value is $387,900, and the median household income is $68,412, which is 9% below the national median.
Demographics
Mariposa County has a population of 17,082, making it the #2,031 most populous county in the US. The median age is 51.2 years, which is 31.6% above 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 Mariposa County is $68,412, ranking #1,309 out of 3,222 counties — 9.0% below the national median. The poverty rate is 14.0% and unemployment stands at 6.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Mariposa County is $387,900 (+37.6% vs national). Renters pay a median of $1,305/mo and the homeownership rate is 74.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Mariposa County, 31.8% of adults age 25+ hold a bachelor's degree or higher, which is 5.6% below the national average, ranking #639 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Mariposa County is 78.3 years. 19.9% of adults report poor or fair health and 6.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.9% of adults in Mariposa County smoke , 32.3% are obese , and 22.4% report excessive drinking. The drug overdose death rate is 31.2 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 29.3 per 100,000. Motor vehicle deaths occur at a rate of 27.3 per 100,000.
Suicide Rate Trend
Families & Children
21.9% of children in Mariposa County live in poverty . The teen birth rate is 18.8 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Mariposa County is 73.1%. The mean commute time is 34.2 min, which is 24.0% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Mariposa County voted Republican with a margin of 21.1%. The vote was 38.1% Dem / 59.2% Rep. Compared to 2020, the margin shifted 3.0 toward Republicans .
Vote Share Over Time
About Mariposa County, California
Mariposa County, California has a total population of 17,082, making it the 2,031st most populous county in the United States. The median age in Mariposa County is 51.2 years, which is 31.6% above the national median of 38.9 years.
The median household income in Mariposa County is $68,412, which ranks #1,309 of 3,222 counties nationwide. This is 9.0% below the national median of $75,149. The poverty rate is 14.0%, higher than the national rate of 12.6%. The unemployment rate stands at 6.0%.
The median home value in Mariposa County is $387,900, 37.6% above the national median. Renters in Mariposa County pay a median gross rent of $1,305 per month. The homeownership rate is 74.7%, compared to the national rate of 64.4%.
In Mariposa County, 31.8% of residents aged 25 and older hold a bachelor's degree or higher, 5.6% below the national average of 33.7%. Health insurance coverage stands at 94.8% of the population. The average commute time for workers is 34.2 min.
Mariposa County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 74.0% of the population, followed by Hispanic or Latino (14.7%) and Two or More Races (5.8%).
All data for Mariposa 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.