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Trinity County, CA Demographics

Trinity County, CA is the 54th most populous of 58 counties in California, with 16,112 residents across 3,179 square miles. That is about 5 people per square mile.

At the 2020 census

Population 16,112
Land area 3,179 sq mi
Density 5 / sq mi

Data: 2020 Census · American Community Survey 2024

How Trinity County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Trinity County, CA

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Trinity County, CA — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Trinity County, CA

Name Population Sq mi Per sq mi
Census Tract 5 7,007 1,431.2 5
Census Tract 1.02 4,405 448.8 10
Census Tract 1.01 2,686 549.9 5
Census Tract 2 2,014 749.4 3

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →