Portal:California


Introduction

Welcome to the Portal:California. Such a lovely place.
Welcome to the Portal:California. Such a lovely place.
California
State of California
Map of the United States with California highlighted
Map of the United States with California highlighted

California is a state in the Western United States. It is bordered by Oregon to the north, the Mexican state of Baja California to the south, Nevada to the east, Arizona to the southeast, and the Pacific Ocean to the west. With a population of over 39 million across an area of 163,696 square miles (423,970 km2), it is the most populous U.S. state and the third largest by land area.

Before European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, as a result of its successful war for independence. Following the U.S. conquest of California, part of the Mexican-American War, California was ceded to the United States in 1848. The California gold rush started in 1848 and led to social and demographic changes, including the California genocide. It organized itself and was admitted as the 31st state in 1850 as a free state, following the Compromise of 1850.

The economy of California is the largest of any U.S. state, with an estimated 2025 gross state product of $4.296 trillion as of Q3 2025. It is also the world's largest sub-national economy and, if it were an independent country, would be the fourth-largest economy in the world (behind Germany and ahead of Japan) by nominal GDP as of 2025. The state's agricultural industry leads the nation in output, fueled by its production of dairy, almonds, and grapes. Despite heavy reliance on seaborne foreign crude oil, California also refines some of its own oil, primarily drilled from Kern County. With the busiest port in the country (Los Angeles), California plays a pivotal role in the global supply chain, hauling in about 40% of goods imported to the US. Notable contributions to popular culture, ranging from entertainment, sports, music, and fashion, have their origins in California. The state also has made substantial contributions in the fields of communication, information, innovation, education, environmentalism, entertainment, economics, politics, technology, and religion. (Full article...)

False color image of Death and Panamint valleys area from space. The smaller linear valley is Panamint Valley and the larger one is Death Valley. The mountain range between Death and Panamint valleys is the Panamint Range and the Black Mountains bound the other side of Death Valley. (NASA image)

The exposed geology of the Death Valley area presents a diverse and complex set of at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related formations geologists call a group. The oldest rocks in the area that now includes Death Valley National Park are extensively metamorphosed by intense heat and pressure and are at least 1700 million years old. These rocks were intruded by a mass of granite 1400 Ma (million years ago) and later uplifted and exposed to nearly 500 million years of erosion.

Marine deposition occurred 1200 to 800 Ma, forming thick sequences of conglomerate, mudstone, and carbonate rock topped by stromatolites, and possibly glacial deposits from the hypothesized Snowball Earth event. Rifting thinned huge roughly linear parts of the supercontinent Rodinia enough to allow sea water to invade and divide its landmass into component continents separated by narrow straits. A passive margin developed on the edges of these new seas in the Death Valley region. Carbonate banks formed on this part of the two margins only to be subsided as the continental crust thinned until it broke, giving birth to a new ocean basin. An accretion wedge of clastic sediment then started to accumulate at the base of the submerged precipice, entombing the region's first known fossils of complex life. These sandy mudflats gave way about 550 Ma to a carbonate platform which lasted for the next 300 million years of Paleozoic time. (Full article...)

General images - load new batch

The following are images from various California-related articles on Wikipedia.

Selected quote - show another

As one went to Europe to see the living past, so one must visit Southern California to observe the future.

Selected biographies - load new batch

Did you know - load new batch

Selected picture - show another

The ghost town of Bodie, California
The ghost town of Bodie, California
Bodie, California is a ghost town east of the Sierra Nevada mountain range in Mono County, California, United States, about 75 miles (120 km) southeast of Lake Tahoe and approximately 12 miles east of Bridgeport. The ghost town has been administered by California State Parks since becoming a state historic park in 1962.

Selected panorama - show another

Air pollution over the City of Los Angeles
Air pollution over the City of Los Angeles
Credit: Diliff

Los Angeles, California is the second-largest city in the United States, with an estimated population of 3.85 million people. Los Angeles is one of the cultural, economic, scientific and entertainment centers of the country.

More selected panoramas • Read more

Topics

List of California state agencies   •   Association of Monterey Bay Area Governments   •   California Attorney General   •   California State Board of Education   •   CDF Aviation Management Program   •   CalPERS   •   California Air Resources Board   •   California Commission for Economic Development   •   California Department of Boating and Waterways   •   California Department of Forestry and Fire Protection   •   California Department of Insurance   •   California Insurance Commissioner election, 2006   •   California Legislative Analyst's Office   •   California Military Department   •   California Public Utilities Commission   •   California Speaks   •   California State Lands Commission   •   California State Lottery   •   California executive branch   •   CaliforniaVolunteers   •   California State Capitol   •   List of California District Attorneys   •   Districts in California   •   State of California enterprise IT systems   •   Department of Fair Employment and Housing   •   California Geological Survey   •   Governor of California   •   11-99 Foundation   •   California Institute for Regenerative Medicine   •   California Insurance Commissioner   •   Joint Powers Authority   •   Local Agency Formation Commission   •   Secretary of State of California   •   List of law enforcement agencies in California   •   California State Controller   •   California State Police   •   California Department of Transportation   •   California State Treasurer   •   Westlands Water District

Categories

Category puzzle
Category puzzle
Select [►] to view subcategories

Quality content

State facts

  • Nicknames: The Golden State
  • Capital: Sacramento
  • Total area: 163,696 mi2
    • Land: 156,002 mi2
    • Water: 7,694 mi2
  • Highest elevation: 14,505 ft (Mount Whitney)
  • Population 39,250,017 (2016 est)
  • Admission to the Union: September 9, 1850 (31st)

State symbols:

Subportals


Related portals

Things you can do

Things you can do
Things you can do

Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

  • Commons
    Free media repository
  • Wikibooks
    Free textbooks and manuals
  • Wikidata
    Free knowledge base
  • Wikiquote
    Collection of quotations
  • Wikisource
    Free-content library
  • Wikiversity
    Free learning tools
  • Wikivoyage
    Free travel guide
  • Wiktionary
    Dictionary and thesaurus

More portals