Map of California's Counties

This interactive map shows the Locations and Names of Counties in California. It also shows major cities for context. For more detail, zoom in. For more information, scroll down.

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California's Counties

California's County Facts

California is called the Golden State. This nickname not only recalls its Gold Rush, but the seemingly limitless possibilities of California's residents.

California is divided into 58 counties.

The largest counties by area are San Bernardino, Inyo, Kern, and Riverside. San Bernardino is also the largest county in the contiguous United States.

California has a population of approximately 40 million people. The most populated counties are Los Angeles County, San Diego County, Orange County, Riverside County, and San Bernardino County.

Los Angeles County is also the most populous county in the United States.

One of the qualities of California's economy is its multiple dominant industry sectors.

California's largest industries are finance and insurance; trade, transportation, and utilities; and professional and business services. California State Assembly.

If you are looking to go to California and are unsure where to go, Expedia can help:

California's Counties and Agriculture

In 2022 California had 9 out of 10 top agricultural producing continues of the nation.

Fresno County was first in the nation, with a total production value of $7 billion, followed by Tulare ($6.4B), Monterey ($5.5B), Kern ($5B), Merced ($4B), Imperial and San Joaquin ($3B) counties. Ceres Courier.

Fresno's top products are almonds, pistachios, and poultry. Tulare produces oranges, cotton, grapes, and more. Monterey produces strawberries, lettuce, and broccoli.

California's Counties and Technology

California is famous for Silicon Valley. The term is associated with the local production of semiconductors. Silicon Valley includes Santa Clara, San Mateo, Alameda, and Santa Cruz.

These are also the wealthiest counties in California.

Major companies in the region include Apple, Alphabet's Google, Chevron, Meta, (formerly Facebook), and Visa.

Prominent California Counties

San Bernardino

Covering 20,105 square miles, San Bernardino County is America’s largest county. With over 24 cities, this county also has a diverse community of over 2.2 million residents.

San Bernardino's terrain is known for its diverse elevations, multi-faceted geography, and enviable climate.

San Bernardino is known for its wide-open spaces as well as its outdoor adventures, from skiing and snowboarding to hiking and watersports.

Santa Clara County

Located in the heart of Silicon Valley, the county has a rich history from its agricultural roots to its current position as a global hub of innovation and technology.

In the later half of the 20th century, the area became home to a number of high-tech companies, including Hewlett-Packard, Intel, and Apple.

Today, Santa Clara County is a diverse community of over 1.9 million people. The county has a large Hispanic population, making up over a quarter of local residents.

Asian Americans also make up a significant portion of the population. Source: Santa Clara

Santa Clara County is the wealthiest county in California, with a median household income of $140,00 and a median home value of almost $1.49 million.

San Mateo County

Today, more than 764,000 people call San Mateo County home and it stretches the boundary of Silicon Valley northward.

Innovation thrives here in industries like bioscience, computer software, green technology, hospitality, financial management, health care, education, and transportation.

San Mateo County is the second richest in California, with a median household income of $136,000 and an average home value of over $1.42 million.

Marin County

Marin County is located in the northwestern part of California’s San Francisco Bay Area. It is a colorful region known for its stunning natural beauty and quaint towns.

With a population of around 262,231 as of the 2020 census, Marin County is an ideal destination for those seeking to explore the outdoors.

As of 2019, Marin County had the sixth highest income per capita of all U.S. counties. It has a median income of $131,000, and a median home value of 1,428,000.

Another notable fact about Marin County is that it holds one of the highest percentage of residents in the nation with Bachelor's Degrees.

46,5631,020.01San AndreasCalaveras
21,9141,150.73Colusa CityColusa
1,156,966715.94MartinezCont. Costa
27,0821,006.37Crescent CityDel Norte
192,6461,707.88PlacervilleEl Dorado
1,015,1905,957.99Fresno CityFresno
178,7134,176.60El CentroImperial
9,721,1384,057.88Los Angeles CityLos Angeles
160,2562,137.07Madera CityMadera
256,018520.31San RafaelMarin
17,0201,448.82Mariposa CityMariposa
134,300748.36Napa CityNapa
102,293957.77Nevada CityNevada
3,151,184790.57Santa AnaOrange
67,5791,388.71HollisterSan Benito
2,193,65620,056.92San BernardinoSan Bernardino
3,276,2084,206.63San DiegoSan Diego
808,43746.87San FranciscoSan Francisco
793,2291,391.32StocktonSan Joaquin
282,0133,298.56San Luis ObispoSan Luis Obispo
729,181448.41Redwood CitySan Mateo
443,8372,735.08Santa BarbaraSanta Barbara
1,870,9451,290.10San JoseSanta Clara
264,370445.17Santa CruzSanta Cruz
482,6501,575.85Santa RosaSonoma
98,503602.41Yuba CitySutter
65,2452,949.71Red BluffTehama
832,6051,843.13Ventura CityVentura

California's County Structure and Power

In California, there is a distinction between a county and a city. Counties lack broad powers of self-government that California cities have. In addition, legislative control over counties is more complete than it is over cities.

The California Constitution recognizes two types of counties: general law counties and charter counties.

General law counties adhere to state law as to the number and duties of county elected officials.

Charter counties, have a limited degree of “home rule” authority that may provide for the election, compensation, terms, removal, and salary of the governing board.

  • General Law Counties are Alpine, Amador, Calaveras, Colusa, Contra Costa, Del Norte, Glenn, Humboldt, Imperial, Inyo, Kern, Kings, Lake, Lassen, Madera, Marin, Mariposa, Mendocino, Merced, Modoc, Mono, Monterey, Napa, Nevada, Plumas, Riverside, San Benito, San Joaquin, San Luis Obispo, Santa Barbara, Santa Cruz, Shasta, Sierra, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Trinity, Tulare, Tuolumne, Ventura, Yolo, and Yuba.
  • Charter Counties: Alameda, Butte, El Dorado, Fresno, Los Angeles, Orange, Placer, Sacramento, San Bernardino, San Diego, San Francisco, San Mateo, Santa Clara, Tehama. More information about this topic in California State Association of Counties.


Resources for California Counties Map

The shapefiles for cities came from Natural Earth.

The shapefiles with California counties were downloaded from California data portal.

The population of California was obtained from the U.S.Census.

This information will also improve with your suggestions. To receive updates on this and more nature maps, join my email list!!!!!!!

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Map of California Counties