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Trinity County, California
—  County  —
County of Trinity
Weaverville Historic District-3.jpgHayfork Creek.jpg
|250px|none|alt=|Images, from top down, left to right: Weaverville Historic District, Hayfork Creek, Trinity Lake, Weaverville Joss House State Historic Park]]Images, from top down, left to right: Weaverville Historic District, Hayfork Creek, Trinity Lake, Weaverville Joss House State Historic Park

[[File:Script error: No such module "Mapframe".|250px|none|alt=|Interactive map of Trinity County]]Interactive map of Trinity County
Location in the state of California
Country United States
State California
Region North Coast
Incorporated February 18, 1850[1]
Named for Trinity River
County seat Weaverville
Largest community Weaverville
 • Total 3,208 sq mi (8,310 km2)
 • Land 3,179 sq mi (8,230 km2)
 • Water 28 sq mi (70 km2)
Highest elevation[2] 9,037 ft (2,754 m)
Population (2020)[3]
 • Total 16,112
 • Density 5.0000000000000/sq mi (1.9000000000000/km2)
Time zone Pacific Time Zone (UTC−8)
 • Summer (DST) Pacific Daylight Time (UTC−7)
Area code 530
FIPS code 06-105
GNIS feature ID 277317

Trinity County is a county in northwestern California. Trinity County is rugged, mountainous, heavily forested, and lies along the Trinity River within the Salmon and Klamath Mountains. It is also one of three counties in California with no incorporated cities.[4]

As of the 2020 census, the population was 16,112,[3] making it the fifth least-populous county in California. The county seat and largest community is Weaverville.[5]


Trinity County has a rich history of Native Americans: Tsnungwe including the South Fork Hupa and tł'oh-mitah-xwe,[6] Chimariko, and Wintu.

The county takes its name from the Trinity River, named in 1845 by Major Pierson B. Reading, who was under the mistaken impression that the river emptied into Trinidad Bay. Trinity is the English translation of Trinidad.

Trinity County was one of the original counties of California, created in 1850 at the time of statehood. Parts of the county were given to Klamath County in 1852 and to Humboldt County in 1853.


According to the U.S. Census Bureau, the county has a total area of 3,208 square miles (8,310 km2), of which 3,179 square miles (8,230 km2) is land and 28 square miles (73 km2) (0.9%) is water.[7] The county contains a significant portion of Shasta-Trinity National Forest and the Trinity Alps Wilderness—the second largest wilderness in California.

Trinity County is made up of five census tracts. Census Tract 1.01 includes the communities of Douglas City, Lewiston, Trinity Center, and part of Coffee Creek and Weaverville. Notable features are Trinity Dam and Lake, Lewiston Dam and Lake, the Trinity River, and the Lewiston Valley. It has a population of 2585 people in 550 square miles, leading to a population density of 4.7 people per square mile.[8] Census Tract 1.02 includes most of Weaverville and Coffee Creek. It is the most populous census tract in the county, with 4558 people. It has 449 square miles, leading to a population density of 10.2 people per square mile. Notable features are the Weaver Basin, the Trinity Alps, Scott Mountain, and the upper Trinity River.[9] Census Tract 2 includes the Downriver area of Trinity County. This means the communities of Junction City, Big Flat, Big Bar, Burnt Ranch, Hawkins Bar, and Salyer. It includes 2024 people, and notable features are the Trinity River, the Trinity Alps, and the New River.[10] Census Tract 3 includes the communities of Hayfork, Hyampom, and Wildwood. It has 3105 people in 600 square miles, leading to a population density of 5.2 people per square mile. Notable features are the South Fork of the Trinity River, South Fork Mountain, Hayfork Valley, Hyampom Valley, Chanchellula Peak, and Hayfork Bally. Census Tract 4 is the largest by area but the least populous census tract in the county with 975 people. It contains 833 square miles, leading to a population density of 1.2 people per square mile. The largest community by far is Mad River, with other smaller ones being Ruth, Kettenpom, and Zenia. Notable features include South Fork Mountain, the Mad River, the Van Duzen River, Ruth Lake, Ruth Valley, Kettenpom Valley, and Hoaglin Valley.

The county hosts many visitors, especially during summer months, for camping, backpacking, boating on the lakes, rafting/kayaking on the rivers, hunting, and fishing. The summers tend to be clear, sunny, warm, and very dry, with little rain from June to September except for some mountain thunderstorms in the highest elevations. Summer days in the populated areas of the county range from 90 to 97 degrees, and summer nights range from 45 to 55. Winter days range from 40 to 50, and nights range from 25 to 35. The winters tend to have copious precipitation, increasing with elevation and falling mostly as rain under 1000m/3300 ft in the valley bottoms, and mostly as snow over 1000m/3300 ft on the mountainsides. December, January, and February are the wettest. The precipitation ranges from 30 to 35 inches at low elevations isolated from coastal influence, such as Big Bar, Hayfork, and Weaverville, up to 55 or 60 inches at high elevations, on the coastal side of South Fork Mountain, or where gaps in the mountain allow for precipitation to get through. Examples of this last phenomenon include Salyer and Forest Glen. Kalmia Lake, at nearly 7500 feet in the Canyon Creek area of the Trinity Alps, is reputed to be the snowiest place in California, outpacing Lake Helen in Mount Lassen National Park, which receives 600-700 inches of snow each winter. Average snowfall in the populated parts of the county ranges from 0-5 inches in the lower Trinity Valley to at least 100 inches in places above 4000 feet, such as Indian Valley west of Hayfork.

There is an extensive wild river and stream system, and the terrain is quite rugged and forested, with the highest point at Mount Eddy, over 9,000 ft (2,700 m). The Klamath Mountains occupy the vast portion of the county.

Adjacent counties[]

National protected areas[]

  • Shasta-Trinity National Forest (part)[11]
  • Six Rivers National Forest (part)[12]
  • Mendocino National Forest (part)[13]
  • Shasta-Trinity National Recreation Area (part)[14]
  • Trinity Alps Wilderness (part)[15]
  • Yolla Bolly-Middle Eel Wilderness (part)[16]


Trinity was a Republican-leaning county in Presidential and congressional elections until recently; now it is a tossup. No Democrat had won the county since Jimmy Carter in 1976 until Barack Obama defeated John McCain by a 4% margin (50% to 46%) in 2008. In 2012, the county again voted Republican, but narrowly. Voter registration reflects this trend, with Democratic and Republican registration in a near dead heat (D: 2,710, R: 2,716). Third-party candidates tend to do rather well in Trinity County: George Wallace got over 13% of the county's vote in 1968, and it was the only California county carried by Ross Perot in 1992. It was also Perot's best performance in the state in 1996, although he didn't carry it again. John Anderson also did very well in 1980, as did third-party candidates in 2016.

Trinity County was the only California county Obama won in the 2008 election and Joe Biden lost in the 2020 election.

United States presidential election results for Trinity County, California[17]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 3,188 50.36% 2,851 45.04% 291 4.60%
2016 2,812 48.62% 2,214 38.28% 758 13.11%
2012 2,716 47.33% 2,674 46.59% 349 6.08%
2008 2,940 45.72% 3,233 50.28% 257 4.00%
2004 3,560 54.66% 2,782 42.71% 171 2.63%
2000 3,340 57.62% 1,932 33.33% 525 9.06%
1996 2,530 42.93% 2,203 37.38% 1,160 19.68%
1992 1,886 31.28% 1,967 32.63% 2,176 36.09%
1988 3,267 54.63% 2,518 42.11% 195 3.26%
1984 3,544 59.71% 2,218 37.37% 173 2.91%
1980 3,048 54.96% 1,734 31.27% 764 13.78%
1976 1,989 45.66% 2,172 49.86% 195 4.48%
1972 1,868 50.75% 1,621 44.04% 192 5.22%
1968 1,426 43.12% 1,433 43.33% 448 13.55%
1964 1,252 36.41% 2,175 63.25% 12 0.35%
1960 1,418 38.35% 2,262 61.17% 18 0.49%
1956 1,447 50.42% 1,406 48.99% 17 0.59%
1952 1,697 57.14% 1,242 41.82% 31 1.04%
1948 975 45.08% 1,053 48.68% 135 6.24%
1944 567 42.22% 770 57.33% 6 0.45%
1940 780 34.79% 1,431 63.83% 31 1.38%
1936 655 30.87% 1,424 67.11% 43 2.03%
1932 318 21.09% 1,101 73.01% 89 5.90%
1928 447 48.85% 433 47.32% 35 3.83%
1924 336 36.48% 154 16.72% 431 46.80%
1920 622 62.89% 285 28.82% 82 8.29%
1916 424 35.16% 661 54.81% 121 10.03%
1912 1 0.10% 461 46.29% 534 53.61%
1908 393 44.41% 331 37.40% 161 18.19%
1904 467 54.11% 308 35.69% 88 10.20%
1900 544 52.36% 485 46.68% 10 0.96%
1896 502 46.44% 545 50.42% 34 3.15%
1892 495 50.82% 457 46.92% 22 2.26%
1888 490 49.70% 490 49.70% 6 0.61%
1884 435 50.29% 418 48.32% 12 1.39%
1880 464 49.89% 457 49.14% 9 0.97%

Trinity County is in California's 2nd congressional district, represented by Democrat   Jared Huffman.[18]

In the state legislature Trinity is in the 2nd Senate District, represented by Democrat   Mike McGuire,[19] and the 2nd Assembly District, represented by Democrat   Jim Wood.[20]

In 2010, Trinity County voted against Proposition 19, which would have taxed and regulated marijuana.

In 2016 Trinity County residents were asked again to vote on legalization of state-level recreational marijuana, facilitated by the Adult Use of Marijuana Act (AUMA), also known as California Proposition 64. The measure passed with 50.1% in favor of legalization.[21] Statewide, the measure passed with 57.1% of the vote.[22]

Voter registration statistics[]


Major highways[]

Public transportation[]

Timelapse of section of Trinity County, California, looking at evidence of clear-cut logging over the years 1972–1994. Data from Landsat satellites.

Trinity Transit provides weekday intercity bus service on State Routes 3 and 299, with connecting service in Willow Creek and Redding. Service is also provided from Weaverville to Lewiston (MWF) and Hayfork (daily).


The county owns five general aviation airports: Trinity Center Airport, Weaverville Airport, Hayfork Airport, Hyampom Airport and Ruth Airport.


The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.



Places by population, race, and income[]


The 2010 United States Census reported that Trinity County had a population of 13,786. The racial makeup of Trinity County was 12,033 (87.3%) White, 59 (0.4%) African American, 655 (4.8%) Native American, 94 (0.7%) Asian, 16 (0.1%) Pacific Islander, 217 (1.6%) from other races, and 712 (5.2%) from two or more races. Hispanic or Latino of any race were 959 persons (7.0%).[33]


Historical populations
Census Pop.
1850 1,635
1860 5,125 213.5%
1870 3,213 −37.3%
1880 4,999 55.6%
1890 3,719 −25.6%
1900 4,383 17.9%
1910 3,301 −24.7%
1920 2,551 −22.7%
1930 2,809 10.1%
1940 3,970 41.3%
1950 5,087 28.1%
1960 9,706 90.8%
1970 7,615 −21.5%
1980 11,858 55.7%
1990 13,063 10.2%
2000 13,022 −0.3%
2010 13,786 5.9%
U.S. Decennial Census[34]
1790-1960[35] 1900-1990[36]
1990-2000[37] 2010-2020[3]

As of the census[38] of 2000, there were 13,022 people, 5,587 households, and 3,625 families residing in the county. The population density was 4 people per square mile (2/km2). There were 7,980 housing units at an average density of 2 per square mile (1/km2). The racial makeup of the county was 88.9% White, 0.5% Black or African American, 4.9% Native American, 0.5% Asian, 0.1% Pacific Islander, 0.9% from other races, and 4.4% from two or more races. 4.0% of the population were Hispanic or Latino of any race. 16.1% were of German, 13.4% English, 12.1% Irish and 9.5% American ancestry according to Census 2000. 97.3% spoke English and 1.8% Spanish as their first language.

There were 5,587 households, out of which 25.4% had children under the age of 18 living with them, 50.5% were married couples living together, 10.1% had a female householder with no husband present, and 35.1% were non-families. 29.5% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 2.80.

In the county, the population was spread out, with 22.8% under the age of 18, 5.1% from 18 to 24, 22.7% from 25 to 44, 32.1% from 45 to 64, and 17.2% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 104.2 males. For every 100 females age 18 and over, there were 102.6 males.

The median income for a household in the county was $27,711, and the median income for a family was $34,343. Males had a median income of $31,131 versus $24,271 for females. The per capita income for the county was $16,868. About 14.1% of families and 18.7% of the population were below the poverty line, including 26.2% of those under age 18 and 7.2% of those age 65 or over.


Census-designated places[]

  • Burnt Ranch is a small, rural community on Highway 299 in the Downriver area of the county. It lies above Burnt Ranch Gorge, a famed whitewater stretch of the Trinity River. The area around it is steep and forested, but there are many agricultural flats in the community proper. There is a volunteer fire department and an elementary school, and there is possibly a store, although it may be closed. The name either comes from a settler's ranch that was burned by Indians or an Indian camp that was burned by settlers.
  • Coffee Creek is a small resort community on Highway 3 north of Trinity Lake. It sits where Coffee Creek meets the Trinity River. The community takes most of its economy from tourism, since it serves as the base camp for a popular trailhead into the Trinity Alps Wilderness. There are several guest ranches and resorts surrounding the community as well. It is home to a store, a pizza place, a campground and RV park, a church, and a fire department, as well as many guest accommodations in the surrounding area.
  • Douglas City is a medium-sized community centered on Highway 299 and the Trinity River south of Weaverville. The homes are clustered around the river, although there are many elsewhere. The businesses in the town include a store, a fire department, and an elementary school. There are resorts and guest accommodations scattered along the river throughout the area.
  • Hayfork is the second largest community in the county. It lies in the Hayfork Valley, the largest agricultural region in the county, and derives a significant part of the economy from ranching. It used to be a mill town as well until the closing of the Sierra Pacific mill in the 1990s due to reduced timber stocks, consolidation, and environmental regulations. There are many businesses in the town, but some significant ones include the Hayfork Hotel, Ernie's Drugstore, Wiley's Supermarket, Hayfork Garage, and Nor'el'pom Natural Foods.
  • Hyampom is the only CDP along the South Fork Trinity River. It lies in the Hyampom Valley, one of the largest agricultural areas in the county, and one of the main economic drivers is vineyards. It sits at the foot of South Fork Mountain at the confluence of Hayfork Creek and the South Fork. The South Fork is one of the largest undammed watersheds in California, and provides critical habitat for salmon and steelhead, although the populations were decimated by the 1964 floods and are still slowly recovering. The businesses in the valley are a bar, a bar and grill, a general store, a vineyard, a community center, and an elementary school that runs off and on.
  • Junction City is the most populous and uppermost community in the Downriver area. It is marked by a large flat along the Trinity River covered in gravel from gold mining in the 19th century. It is located where Canyon Creek meets the river, and 15 miles up the creek lies the Canyon Creek Trailhead, the most popular trailhead into the Trinity Alps. The community's institutions consist of an elementary school, a store, a cafe, and a fire department.
  • Lewiston is the third-largest community in the county. Prior to the Trinity River Project that built Trinity and Lewiston Dams, Lewiston was a small country crossroads, but during construction, a large community was built to house the workers and it stands to this day as the center of Trinity River recreation, including fly fishing, swimming, boating, rafting, and more.
  • Mad River is one of two CDPs in the county not in the Trinity River watershed, the other being Ruth. It lies along the Mad River where Highway 36 crosses it. Unlike the north part of the county, Mad River is surrounded by rolling hills and mixed oak woodlands and Douglas fir forests. The businesses in the community include a burger joint, a church, a fire department, an elementary school, and a high school, one of three in the county.
  • Post Mountain is on the north side of Highway 36, mainly in the valley of Post Creek. It is a new CDP delineated for the 2020 census.
  • Ruth is the second CDP outside of the Trinity River basin, and the smallest in the county. It lies in the Ruth Valley south of Ruth Lake. The economy centers on Ruth Lake and the tourism attracted by it. Businesses include a church, a cafe, and many resorts and campgrounds.
  • Salyer is on the western edge of Trinity County, along the Trinity River where it is joined by the South Fork. It is a new CDP delineated for the 2020 census.
  • Trinity Center is the largest community on Trinity Lake, which brings in tourism and sustains the economy of the town. It used to lie at the bottom of a valley that was flooded by Trinity Lake in the 1950s, when it was moved to its current location along with several historic buildings. It is home to the busiest airport in the county.
  • Trinity Village locally known as Hawkins Bar, is a community in the Downriver area. The only non-accommodation business is a bar and grill. Its economy is based on recreation on the Trinity River.
  • Weaverville is the county seat and by far the largest community in the county. It is nestled along Weaver Creek in the Weaver Basin along Highway 299. It got its beginnings as a Gold Rush town, and there are still many historic buildings, including several of the oldest brick buildings in the state and the oldest county courthouse. There was a thriving Chinese community at the height of the Gold Rush, and a state park today houses the oldest Taoist temple in the state, the Joss House.

Unincorporated communities[]

  • Big Bar
  • Del Loma
  • Denny
  • Forest Glen
  • Hawkins Bar
  • Peanut
  • Zenia

Former cities/towns/communities[]

City Year




Helena, California 1851 1950s Became private property
Canon City, California 1851 1891 Nothing remains of the former town but a historical marker.
Dedrick, California 1890 1941 Nothing remains of the former town but a historical marker.
Deadwood, Trinity County, California 1881 1915 Nothing remains of the former town.

Population ranking[]

The population ranking of the following table is based on the 2020 census of Trinity County.

county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Weaverville CDP 3,667
2 Post Mountain CDP 3,032
3 Hayfork CDP 2,324
4 Lewiston CDP 1,222
5 Douglas City CDP 868
6 Junction City CDP 658
7 Round Valley Reservation[39] (partially in Mendocino County) AIAN 454
8 Salyer CDP 389
9 Mad River CDP 361
10 Trinity Village CDP 278
11 Ruth CDP 254
12 Burnt Ranch CDP 250
13 Hyampom CDP 241
14 Trinity Center CDP 198
15 Coffee Creek CDP 152

See also[]

  • Hiking trails in Trinity County
  • National Register of Historic Places listings in Trinity County, California
  • Trinity Lakes American Viticultural Area
  • Willow Creek American Viticultural Area


  1. ^ Percentage of registered voters with respect to total population. Percentages of party members with respect to registered voters follow.
  2. ^ Only larceny-theft cases involving property over $400 in value are reported as property crimes.
  3. ^ Other = Some other race + Two or more races
  4. ^ Native American = Native Hawaiian or other Pacific Islander + American Indian or Alaska Native


  1. ^ "Chronology". California State Association of Counties. 
  2. ^ Mount Eddy
  3. ^ a b c "State & County QuickFacts". United States Census Bureau. 
  4. ^ California State Association of Counties. "Cities Within Each County", ""California State Association of Counties"", Retrieved on 4 June 2018.
  5. ^ "Find a County". National Association of Counties. 
  6. ^ Tsnungwe Place Names, by Tsnungwe Tribal Elders, 1994
  7. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. 
  8. ^ "Census profile: Census Tract 1.01, Trinity, CA" (in en). 
  9. ^ "Census Tract, Census Tract 1.02, Trinity County, California". 
  10. ^ "Trinity County | Place Rankings | Data Commons". 
  11. ^ "Shasta-Trinity National Forest - Home". 2018-08-22. 
  12. ^ "Six Rivers National Forest - Home". 2018-08-24. 
  13. ^ "Mendocino National Forest - Home". 
  14. ^ "Shasta-Trinity National Forest - About the Forest". 
  15. ^ "Shasta-Trinity National Forest - Trinity Alps Wilderness". 
  16. ^ "Mendocino National Forest - Yolla Bolly-Middle Eel Wilderness". 
  17. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". 
  18. ^ "California's 2nd Congressional District - Representatives & District Map". Civic Impulse, LLC. 
  19. ^ "Senators". State of California. 
  20. ^ "Members Assembly". State of California. 
  21. ^ "CA Prop 64 state and county votes". Los Angeles Times. 
  22. ^ "Ballotpedia California Prop 64 (2016)".,_Marijuana_Legalization_(2016). 
  23. ^ a b c d e f g h i j k l m n o p U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B02001. U.S. Census website. Retrieved 2013-10-26.
  24. ^ a b c d e f g h i j Cite error: Invalid <ref> tag; no text was provided for refs named CA-SS
  25. ^ a b c Caltrans, State of California. "QuickMap". 
  26. ^ a b c d e f g h i Cite error: Invalid <ref> tag; no text was provided for refs named CA-DOJ-T11
  27. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B03003. U.S. Census website. Retrieved 2013-10-26.
  28. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19301. U.S. Census website. Retrieved 2013-10-21.
  29. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19013. U.S. Census website. Retrieved 2013-10-21.
  30. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19113. U.S. Census website. Retrieved 2013-10-21.
  31. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates. U.S. Census website. Retrieved 2013-10-21.
  32. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B01003. U.S. Census website. Retrieved 2013-10-21.
  33. ^ "2010 Census P.L. 94-171 Summary File Data". United States Census Bureau. 
  34. ^ "U.S. Decennial Census". United States Census Bureau. 
  35. ^ "Historical Census Browser". University of Virginia Library. 
  36. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. 
  37. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. 
  38. ^ "U.S. Census website". United States Census Bureau. 
  39. ^ Staff, Website Services & Coordination. "U.S. Census Bureau 2020 Census".,%20CA%3B%20California. 

External links[]

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Coordinates: 40°40′N 123°07′W / 40.66, -123.12

This page uses content from the English language Wikipedia. The original content was at Trinity County, California. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.