Trinity County, California Age & Gender Distribution (2024)
Population distribution by age and gender for Trinity County, California
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

Trinity County, California Demographic Trend
Since 2010, the population of has changed by +15.8%%.
+15.8%% Growth
Trinity County, California Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Trinity County, California Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 54.9 | 15,860 |
| 2023 | 54.8 | 15,886 |
| 2022 | 53.2 | 15,889 |
| 2021 | 53.9 | 15,818 |
| 2020 | 52.4 | 12,541 |
| 2019 | 52.5 | 12,700 |
| 2018 | 51.8 | 12,862 |
| 2017 | 51.4 | 13,037 |
| 2016 | 50.6 | 13,180 |
| 2015 | 50.3 | 13,373 |
| 2014 | 50.0 | 13,515 |
| 2013 | 49.8 | 13,638 |
| 2012 | 49.2 | 13,693 |
| 2011 | 49.3 | 13,711 |
| 2010 | 48.5 | 13,701 |
Trinity County, California Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 3.8% |
| 5–17 | 13.4% |
| 18–24 | 4.2% |
| 25–34 | 8.2% |
| 35–54 | 20.5% |
| 55–64 | 19.6% |
| 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.