The Tehama post office opened in 1851, the earliest record of the town by name. Wikidata gives 1906. Another post office, Hall's Ranch (1851), opened inside today’s city and later closed.
First census: 328 in 18802020 census: 435175 years
Founding year: the first Tehama post office (Blevins & Helbock, CC0). Wikidata: 1906.The full story ↓
What stands out about Tehama’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
A Nomlaki village of Wintun people once stood on the site of modern-day Tehama on the western bank of the Sacramento River.
Tehama (pronounced Tuh-HAY-muh) was founded by Robert Hasty Thomes, who arrived in the area that is now Tehama County in the company of Albert G. Toomes, William Chard, and Job Francis Dye. The four men travelled northward from San Francisco, and were each given land grants from the government of Mexico in 1844, with Thomes' portion being Rancho Saucos.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
1889Sheet 1 of 1
Edition
Sheets
BrickWoodStone
Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
Then & now
Stand where they stood
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (2), the Library of Congress (1), Wikidata (1), the National Register of Historic Places (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.