Siskiyou County, California Demographics 2026

Population Overview

Siskiyou County is located in California with a total population of 43,834. It is the 45th most populous county out of 58 in California.

Age Demographics

The median age in Siskiyou County is 47.4 years. This is 26% higher than the state median of 37.6 years. 10.4% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Siskiyou County is $55,499. This is 42% lower than the state median of $96,334. Compared to the national median of $78,538, household income here is 29% lower. The poverty rate stands at 16.6%. This is 38% higher than the state poverty rate of 12.0%. The unemployment rate is 7.7%. This is 20% higher than the state rate of 6.4%. The median home value is $284,500. Housing costs are 59% lower than the state median of $695,400. The home-value-to-income ratio is 5.1x. 69.7% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 55.8%.

Race & Ethnicity

The largest racial or ethnic group in Siskiyou County is White (non-Hispanic), making up 74.2% of the population. Hispanic or Latino residents account for 13.1%. The White (non-Hispanic) population is significantly higher than the state average (74.2% vs 34.6%). The Black or African American population (1.7%) is well below the state average of 5.3%. The Hispanic or Latino population (13.1%) is well below the state average of 39.8%. The Asian population (1.6%) is well below the state average of 15.0%.

Education

23.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% lower than the state rate of 36.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.1%.