Trinity County Population

1850–2026

15,743

2026 projection

2.2% since 2020 (decrease)

05K10K15K20K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Trinity County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202615,743+230.15%
202515,720+230.15%
202415,697+70.04%
202315,690-1230.78%
202215,813-2971.84%
202116,110+110.07%
202016,099+3,76230.49%
201912,337-2612.07%
201812,598-1291.01%
201712,727-1000.78%

Showing 10 of 32 years.

Trinity County Demographics

54.9median age

Median age

Female54.1 yrs
Male55 yrs

Adults

13,133
4,795 seniors (65+) · 37% of adults8,338 other adults

Sex

Female 51.5% · 8,175Male 48.5% · 7,685

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 159 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Trinity County Income

$53,002median household income

Median household income

$53,002

Half of households earn more, half earn less

Median earnings

$40,338

Typical yearly pay for a worker 25 or older.

Poverty rate

20.7%

About 1 in 5 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Trinity County Marital Status

38% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married38%43%33%
Never married28%31%26%
Divorced24%17%30%
Widowed8%6%9%
Separated3%3%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201