Trinity County, California

Trinity County, California, has 15,720 residents (July 2025 estimate). Its county seat is Weaverville. It uses Pacific Time and covers 3,179 sq mi (8,234 km²) of land.

Los AngelesSan DiegoSan Jose
Trinity County in California
Humboldt CountyShasta CountyTehama CountyWeavervilleHayfork
Trinity County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
15,720
Land area
3,179 sq mi (8,234 km²)
County seat or government
Weaverville
Time zone
Pacific TimeUTC-08:00 in January; UTC-07:00 in July
Median household income
$53,002 ± $8,924
Median home value
$325,800 ± $23,401
Median rent, with utilities
$1,073 ± $210
Homes lived in by their owners
71.7% ± 6.3 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Redding, CA metro area, Eureka-Arcata, CA micro area, Red Bluff, CA micro area, and Ukiah, CA micro area
Water area
28.3 sq mi (73.4 km²)
State
California
County code (FIPS)
06105
Coordinates (central point)
40.647858, -123.114666

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Trinity County

Time zoneLocal time and UTC offsetNext clock change
Pacific TimeAmerica/Los_AngelesUTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 960934,320 people
  2. 960412,889 people
  3. 960522,366 people
  4. 960481,297 people
  5. 960241,082 people
  6. 96091932 people
  7. 95526745 people
  8. 95527622 people
  9. 95552586 people
  10. 95563577 people
  11. 96046489 people
  12. 96010212 people
All 14
  1. 96076148 people
  2. 95595133 people

14 ZIP Code areas overlap Trinity County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Trinity County, largest first

  1. Trinity Alps Unified School District (9-12)6,519 people
  2. Klamath-Trinity Joint Unified School District4,909 people
  3. Trinity Alps Unified School District4,402 people
  4. Mountain Valley Unified School District3,467 people
  5. Lewiston Elementary School District2,660 people
  6. Junction City Elementary School District1,297 people
  7. Southern Trinity Joint Unified School District1,233 people
  8. Douglas City Elementary School District918 people
  9. Burnt Ranch Elementary School District712 people
  10. Trinity Center Elementary School District616 people
  11. Coffee Creek Elementary School District316 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Trinity County, largest first

  1. Round Valley Reservation and Off-Reservation Trust Land298 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Weaverville, California (CDP)4,018 people
  2. Hayfork, California (CDP)2,537 people
  3. Lewiston, California (CDP)2,020 people
  4. Junction City, California (CDP)1,190 people
  5. Douglas City, California (CDP)1,060 people
  6. Salyer, California (CDP)487 people
  7. Ruth, California (CDP)480 people
  8. Trinity Center, California (CDP)414 people
  9. Burnt Ranch, California (CDP)318 people
  10. Coffee Creek, California (CDP)280 people
  11. Mad River, California (CDP)272 people
  12. Post Mountain, California (CDP)233 people
All 14
  1. Trinity Village, California (CDP)209 people
  2. Hyampom, California (CDP)102 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Humboldt County, California43 mi west
  2. Shasta County, California57 mi east
  3. Tehama County, California59 mi southeast
  4. Siskiyou County, California72 mi northeast
  5. Mendocino County, California86 mi south

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.