Siskiyou County, California
Located in California, Siskiyou County has a population of 43,466 residents and a median age of 47.2 years, making it the #1,139 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.4%. The median home value is $309,500, and the median household income is $59,095, which is 21% below the national median.
Demographics
Siskiyou County has a population of 43,466, making it the #1,139 most populous county in the US. The median age is 47.2 years, which is 21.3% 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 Siskiyou County is $59,095, ranking #2,161 out of 3,222 counties — 21.4% below the national median. The poverty rate is 16.4% and unemployment stands at 7.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Siskiyou County is $309,500 (+9.8% vs national). Renters pay a median of $1,091/mo and the homeownership rate is 69.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Siskiyou County, 23.3% of adults age 25+ hold a bachelor's degree or higher, which is 30.8% below the national average, ranking #1,455 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Siskiyou County is 73.1 years. 18.8% of adults report poor or fair health and 8.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.9% of adults in Siskiyou County smoke , 32.9% are obese , and 21.8% report excessive drinking. The drug overdose death rate is 38.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Siskiyou County is 7.2 per 100,000 and the suicide rate is 25.6 per 100,000. Motor vehicle deaths occur at a rate of 28.5 per 100,000.
Homicide Rate Trend
Families & Children
21.6% of children in Siskiyou County live in poverty and the infant mortality rate is 7.8 per 1,000 live births. The teen birth rate is 17.6 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Siskiyou County is 69.3%. The mean commute time is 23.2 min, which is 15.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Siskiyou County voted Republican with a margin of 19.2%. The vote was 38.8% Dem / 58% Rep. Compared to 2020, the margin shifted 3.4 toward Republicans .
Vote Share Over Time
About Siskiyou County, California
Siskiyou County, California has a total population of 43,466, making it the 1,139th most populous county in the United States. The median age in Siskiyou County is 47.2 years, which is 21.3% above the national median of 38.9 years.
The median household income in Siskiyou County is $59,095, which ranks #2,161 of 3,222 counties nationwide. This is 21.4% below the national median of $75,149. The poverty rate is 16.4%, higher than the national rate of 12.6%. The unemployment rate stands at 7.9%.
The median home value in Siskiyou County is $309,500, 9.8% above the national median. Renters in Siskiyou County pay a median gross rent of $1,091 per month. The homeownership rate is 69.2%, compared to the national rate of 64.4%.
In Siskiyou County, 23.3% of residents aged 25 and older hold a bachelor's degree or higher, 30.8% below the national average of 33.7%. Health insurance coverage stands at 94.0% of the population. The average commute time for workers is 23.2 min.
Siskiyou County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 73.3% of the population, followed by Hispanic or Latino (13.5%) and Two or More Races (6.5%).
All data for Siskiyou 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.