Trinity County's 2026 population is estimated at 15,558, reflecting a -0.27% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Trinity County is the 54th largest county in California. The 2010 population was 13,755 and has grown 13.11% since 2010.
Data after 2023 is projected based on recent change
Overall: 54.9 years
Female: 54.1 years
Male: 55 years
There are 13,133 adults, (4,795 of whom are seniors) in Trinity County.
Female: 8,175 (51.5%)
Male: 7,685 (48.5%)
The racial composition of Trinity County includes 78.26% White, 4.87% other race, 3.75% Native American, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 12,412 | 78.26% |
| Two or more races | 1,710 | 10.78% |
| Other race | 772 | 4.87% |
| Native American | 594 | 3.75% |
| Black or African American | 174 | 1.1% |
| Asian | 101 | 0.64% |
| Native Hawaiian or Pacific Islander | 97 | 0.61% |
Trinity County 's average per capita income is $40,338. Household income levels show a median of $53,002. The poverty rate stands at 20.7%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $78,585 | - |
| Families | $75,143 | $94,907 |
| Households | $53,002 | $76,682 |
| Non Families | $36,866 | $55,470 |
Average Income
Median Household Income
Poverty Rate