Trinity County, California Age & Gender Statistics (2024)

Total Population

15,860

Median Age

54.9

Male Median

55.0

Female Median

54.1

Trinity County, California Population Growth

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

Trinity County, California Demographic Trend

Since 2010, the population of has changed by +15.8%%.

+15.8%% Growth

Trinity County, California Age & Gender Pyramid

Population pyramid for

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


Trinity County, California Historical Population Data

YearMedian AgePopulation
202454.915,860
202354.815,886
202253.215,889
202153.915,818
202052.412,541
201952.512,700
201851.812,862
201751.413,037
201650.613,180
201550.313,373
201450.013,515
201349.813,638
201249.213,693
201149.313,711
201048.513,701

Trinity County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 53.8%
5–1713.4%
18–244.2%
25–348.2%
35–5420.5%
55–6419.6%
65+30.2%

Dependency Ratios for Trinity County, California

Total Dependency Ratio:
90.2
Youth Dependency:
32.7
Old-Age Dependency:
57.5

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



Age & Gender FAQs for Trinity County, California

The median age in Trinity County, California is 54.9 years.

According to latest Census data, the total population of Trinity County, California is 15,860.

In Trinity County, California, seniors (ages 65+) make up 30.2% of the population, while children under 18 represent 13.4%.

Based on historical data since 2010, the population in Trinity County, California is aging.
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