County Maps US

Tehama County, California

A county in California, ranked 42 of 58 by population.

CountyFIPS 06103

Within California
Tehama County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Red Bluff, the county seat, located via the 2025 Census Gazetteer.

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Population
64,665
-1,095 (-1.7%) since 2020
Land area
2,949
square miles. A further 0.4% of the total area is water
Population density
21.9
people per square mile, computed rather than published
County seat
Red Bluff
Seat of county government.
Established
1856
169 years ago
Largest city
Red Bluff city
Population 14,404.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Tehama County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Tehama County, California from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 441 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Tehama County ranks

Position among the 58 counties of California, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn CaliforniaNationally
Population64,66542nd of 58848th of 3,144
Land area2,949 sq mi20th of 58175th of 3,144
Population density21.9 per sq mi46th of 582,177th of 3,144
Median household income$63,78451st of 581,722nd of 3,143

Full data for Tehama County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population64,665Vintage 2025 Population Estimates
Population in 202065,760Vintage 2025 Population Estimates
2020 estimates base?65,912Vintage 2025 Population Estimates
Land area2,949 sq mi2025 Gazetteer Files
Water area13.0 sq mi2025 Gazetteer Files
Total area2,962 sq mi2025 Gazetteer Files
Population density?21.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$63,784American Community Survey 2020-2024 5-Year Estimates
Median home value$339,600American Community Survey 2020-2024 5-Year Estimates
Median age40.0American Community Survey 2020-2024 5-Year Estimates
Households24,788American Community Survey 2020-2024 5-Year Estimates
Housing units27,527American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-17
731 births, 748 deaths
Net migration
-89
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Tehama County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Shasta CountyCalifornia112 mi181,648
Butte CountyCalifornia56 mi209,211
Glenn CountyCalifornia48 mi28,141
Plumas CountyCalifornia36 mi18,583
Trinity CountyCalifornia29 mi15,720
Mendocino CountyCalifornia16 mi88,122

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 58 counties of California

Open the interactive California county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.