Siskiyou County, California Age & Gender Statistics (2024)

Total Population

43,466

Median Age

47.2

Male Median

45.6

Female Median

49.2

Siskiyou County, California Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Siskiyou County, California Demographic Trend

Since 2010, the population of has changed by -2.7%%.

-2.7%% Growth

Siskiyou County, California Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Siskiyou County, California Historical Population Data

YearMedian AgePopulation
202447.243,466
202347.443,834
202247.244,049
202147.144,151
202047.743,516
201947.843,468
201848.043,540
201747.943,530
201647.943,668
201547.843,895
201447.344,261
201347.144,503
201247.044,673
201146.944,687
201046.544,690

Siskiyou County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 54.5%
5–1715.5%
18–246.0%
25–349.6%
35–5422.3%
55–6414.2%
65+27.8%

Dependency Ratios for Siskiyou County, California

Total Dependency Ratio:
91.7
Youth Dependency:
38.3
Old-Age Dependency:
53.4

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Siskiyou County, California

The median age in Siskiyou County, California is 47.2 years.

According to latest Census data, the total population of Siskiyou County, California is 43,466.

In Siskiyou County, California, seniors (ages 65+) make up 27.8% of the population, while children under 18 represent 15.5%.

Based on historical data since 2010, the population in Siskiyou County, California has remained stable.
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