Trinity County, California
Historic newspapers, landmarks, and county history layers for genealogists and local historians.
At a glance
SummaryThe National Register of Historic Places includes 4 listed properties in the county, first listed in 1971. Most listings are in or near Trinity Center, Helena, Lewiston.
Summary generated automatically from the source data on this page.
Newspapers
Library of CongressNewspaper directory data for California is not yet loaded on this site. Browse Trinity titles at the Library of Congress.
National Register of Historic Places
NPS NRHP1 of 4 listings mapped; some locations are restricted by NPS to protect sensitive sites.
4 listed properties
| Property | City | Listed |
|---|---|---|
| Bowerman Barn | Trinity Center | 1981 |
| Helena Historic District | Helena | 1984 |
| Lewiston Historic District | Lewiston | 1989 |
| Weaverville Historic District | Weaverville | 1971 |
Source: National Park Service, National Register of Historic Places. Property links open NRHP nomination files at the National Archives.
County formation
Newberry AHCBTrinity was formed in 1850 (1850-02-18) from unknown / original county.
TRINITY created from non-county area; TRINITY not fully organized, attached to SHASTA for judicial and other purposes.
Source: Newberry Library, Atlas of Historical County Boundaries.
Population by decade
CensusTrinity County population from 1850 to 2020 (Census historical series).
| 1850 | 1860 | 1880 | 1900 | 1920 | 1940 | 1950 | 1960 | 1980 | 2000 | 2020 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1,635 | 5,125 | 4,999 | 4,383 | 2,551 | 3,970 | 5,087 | 9,706 | 11,858 | 13,022 | 16,112 |
Sources: U.S. Census Bureau historical county population (Forstall 1790–1990) and public-domain / CC0 county population series through 2020.
National Park Service sites nearby
NPSPark units within about 40 km of the county centroid (from NPS Public POIs; no API key).
| Site | Type | Dist. |
|---|---|---|
| Whiskeytown National Recreation Area | Park unit | 44.9 km |
Source: NPS National Datasets / Public POIs. The NPS Developer API requires a free key and was not used.
Cemeteries & historical places
USGS GNIS11 cemeteries and 5 historical populated places (ghost towns / former settlements) recorded in USGS GNIS for this county.
Cemeteries — 11 of 11 listed
| Name |
|---|
| Hayfork Cemetery |
| Helena Cemetery |
| Hyampom Cemetery |
| Hyampom Cemetery |
| Lewiston Cemetery |
| Lewiston Pioneer Cemetery |
| Norgaar Family Cemetery |
| Price Creek Cemetery |
| Ridgeville Cemetery |
| Salyer Cemetery |
| Weaverville Cemetery |
Historical populated places — 5 of 5
| Name |
|---|
| Bragdon |
| Keno |
| Minersville |
| Norgaar |
| Stringtown |
Source: USGS Geographic Names Information System (public domain). Cemeteries from the 2021 NationalFile archive; historical places from GNIS HistoricalFeatures topical extract.
Historical markers
HMdb linkMarker text and photos from the Historical Marker Database (HMdb) are not embedded here. HMdb allows non-commercial reuse with attribution, but commercial/compensated use needs written permission; this is a commercial site, so we only link out.
Search HMdb for Trinity County, California
Terms: hmdb.org/copyright.asp. Linking is encouraged by HMdb.