Southern California (commonly shortened to SoCal) is a geographic and
cultural region
In anthropology and geography, a cultural region, cultural sphere, cultural area or culture area refers to a geography with one relatively homogeneous human activity or complex of activities (culture). Such activities are often associated ...
that generally comprises the southern portion of the U.S. state of
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...
. It includes the
Los Angeles metropolitan area
Greater Los Angeles is the second-largest metropolitan region in the United States with a population of 18.5 million in 2021, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino Cou ...
, the second most populous
urban agglomeration in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
. The region generally contains ten of California's 58 counties:
Imperial,
Kern,
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
,
Orange,
Riverside,
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
,
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
,
Santa Barbara,
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
and
Ventura counties.
The
Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado ...
and the
Colorado River
The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid watershed that encompasses parts of seven U.S. s ...
are located on Southern California's eastern border with
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four ...
, and San Bernardino County shares a border with
Nevada
Nevada ( ; ) is a state in the Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the 7th-most extensive, ...
to the northeast. Southern California's southern border with
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
is part of the
Mexico–United States border
The Mexico–United States border ( es, frontera Estados Unidos–México) is an international border separating Mexico and the United States, extending from the Pacific Ocean in the west to the Gulf of Mexico in the east. The border tra ...
.
Constituent metropolitan areas
Southern California includes the heavily built-up urban area which stretches along the Pacific coast from
Ventura through
Greater Los Angeles down to
Greater San Diego (the contiguous urban area in fact continuing into
Tijuana, Mexico), and inland to the
Inland Empire
The Inland Empire (IE) is a metropolitan area and region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. It includes the cities ...
and
Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacin ...
(
Palm Springs
Palm Springs ( Cahuilla: ''Séc-he'') is a desert resort city in Riverside County, California, United States, within the Colorado Desert's Coachella Valley. The city covers approximately , making it the largest city in Riverside County by land ...
area). It encompasses eight metropolitan areas (MSAs), three of which together form the Greater Los Angeles
Combined Statistical Area
Combined statistical area (CSA) is a United States Office of Management and Budget (OMB) term for a combination of adjacent metropolitan (MSA) and micropolitan statistical areas (µSA) across the 50 US states and the territory of Puerto Ric ...
(CSA) with over 18 million people, the second-biggest CSA after
the New York CSA. These three MSAs are: the
Los Angeles metropolitan area
Greater Los Angeles is the second-largest metropolitan region in the United States with a population of 18.5 million in 2021, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino Cou ...
(
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
and
Orange counties, with 13.3 million people), the
Inland Empire
The Inland Empire (IE) is a metropolitan area and region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. It includes the cities ...
(
Riverside and
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
counties, including the
Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacin ...
cities, with 4.3 million people), and the
Oxnard–Thousand Oaks–Ventura metropolitan area (0.8 million people). In addition, southern California contains the
San Diego metropolitan area
San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the ...
with 3.3 million people,
Bakersfield metro area with 0.9 million, and the
Santa Barbara,
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
, and
El Centro (Imperial County) metropolitan areas.
The Southern California
Megaregion (or
megalopolis) is larger still, extending northeast into
Las Vegas
Las Vegas (; Spanish for "The Meadows"), often known simply as Vegas, is the 25th-most populous city in the United States, the most populous city in the state of Nevada, and the county seat of Clark County. The city anchors the Las Vegas ...
,
Nevada
Nevada ( ; ) is a state in the Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the 7th-most extensive, ...
and south across the
Mexican border into
Tijuana
Tijuana ( ,["Tijuana"](_blank)
(US) and [< ...]
.
Significance

Within Southern California are two major cities,
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
and
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
, as well as three of the
country's largest metropolitan areas. With a population of approximately 4 million, Los Angeles is the most populous city in California and the second most populous in the United States. South of Los Angeles and with a population of approximately 1.4 million is San Diego, the second most populous city in the state and the eighth most populous in the nation.

The counties of
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
,
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
,
Orange,
Riverside, and
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
are the five most populous in the state, and are among the top 15 most populous counties in the United States.
The
motion picture
A film also called a movie, motion picture, moving picture, picture, photoplay or (slang) flick is a work of visual art that simulates experiences and otherwise communicates ideas, stories, perceptions, feelings, beauty, or atmosphere ...
,
television
Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, ...
and
music industry
The music industry consists of the individuals and organizations that earn money by writing songs and musical compositions, creating and selling recorded music and sheet music, presenting concerts, as well as the organizations that aid, train, ...
are centered in the Los Angeles area in Southern California.
Hollywood
Hollywood usually refers to:
* Hollywood, Los Angeles, a neighborhood in California
* Hollywood, a metonym for the cinema of the United States
Hollywood may also refer to:
Places United States
* Hollywood District (disambiguation)
* Hollywoo ...
, a district of Los Angeles, gives its name to the American motion picture industry, which is synonymous with the neighborhood name. Headquartered in Southern California are
The Walt Disney Company
The Walt Disney Company, commonly known as Disney (), is an American multinational mass media and entertainment conglomerate headquartered at the Walt Disney Studios complex in Burbank, California. Disney was originally founded on October ...
(which owns
ABC),
Sony Pictures
Sony Pictures Entertainment Inc. (commonly known as Sony Pictures or SPE, and formerly known as Columbia Pictures Entertainment, Inc.) is an American diversified multinational mass media and entertainment studio conglomerate that produces, ac ...
,
Universal Pictures
Universal Pictures (legally Universal City Studios LLC, also known as Universal Studios, or simply Universal; common metonym: Uni, and formerly named Universal Film Manufacturing Company and Universal-International Pictures Inc.) is an Americ ...
,
MGM,
Paramount Pictures
Paramount Pictures Corporation is an American film and television production and distribution company and the main namesake division of Paramount Global (formerly ViacomCBS). It is the fifth-oldest film studio in the world, the second-oldes ...
and
Warner Bros
Warner Bros. Entertainment Inc. (commonly known as Warner Bros. or abbreviated as WB) is an American film and entertainment studio headquartered at the Warner Bros. Studios complex in Burbank, California, and a subsidiary of Warner Bros. ...
. Universal, Warner Bros. and Sony also run major record companies.
Southern California is also home to a large homegrown surf and skateboard culture. Companies such as
Vans,
Volcom,
Quiksilver
Quiksilver is a brand of surf-inspired apparel and accessories that was founded in 1969 in Torquay, Australia, but is now based in Huntington Beach, California. It is one of the world's largest brands of surfwear and boardsport-related eq ...
,
No Fear,
Stüssy,
RVCA
RVCA is a Costa Mesa, California–based clothing company owned by Boardriders.
Etymology
The logotype for RVCA portrays the letter A without a crossbar, resembling an uppercase lambda (Λ). The 'V' character is really a "U". Occasionally "RVC ...
and
Body Glove are all headquartered here. Skateboarder
Tony Hawk
Anthony Frank Hawk (born May 12, 1968), nicknamed Birdman, is an American professional skateboarder, entrepreneur, and the owner of the skateboard company Birdhouse. A pioneer of modern vertical skateboarding, Hawk completed the first documen ...
; surfers
Rob Machado
Robert Edward Machado (born October 16, 1973) is an Australian-born American professional surfer.
Early life
Machado attended San Dieguito High School. He describes himself in interviews, vlogs and social media as a " soul surfer," or f ...
,
Timmy Curran,
Bobby Martinez,
Pat O'Connell,
Dane Reynolds, and
Chris Ward live in Southern California. Some of the most famous surf locations are in Southern California as well, including
Trestles,
Rincon,
The Wedge,
Huntington Beach
Huntington Beach is a seaside city in Orange County in Southern California, located southeast of Downtown Los Angeles. The city is named after American businessman Henry E. Huntington. The population was 198,711 during the 2020 census, maki ...
and
Malibu. Some of the world's largest
action sports events, including the
X Games
The X Games are an annual extreme sports event organized, produced and broadcast by ESPN. Coverage is also shown on ESPN's sister network, ABC. The inaugural X Games were held during the summer of 1995 in Providence and Newport, Rhode Islan ...
,
Boost Mobile Pro, and the
U.S. Open of Surfing, are held in Southern California. The region is also important to the world of
yachting
Yachting is the use of recreational boats and ships called ''yachts'' for racing or cruising. Yachts are distinguished from working ships mainly by their leisure purpose. "Yacht" derives from the Dutch word '' jacht'' ("hunt"). With sailboats, ...
with premier events including the annual
Transpacific Yacht Race, or ''Transpac'', from Los Angeles to Hawaii. The
San Diego Yacht Club held the
America's Cup
The America's Cup, informally known as the Auld Mug, is a trophy awarded in the sport of sailing. It is the oldest international competition still operating in any sport. America's Cup match races are held between two sailing yachts: one fr ...
, the most prestigious prize in yachting, from 1988 to 1995 and hosted three America's Cup races during that time. The first modern-era
triathlon
A triathlon is an endurance multisport race consisting of swimming, cycling, and running over various distances. Triathletes compete for fastest overall completion time, racing each segment sequentially with the time transitioning between the ...
was held in San Diego's
Mission Bay in 1974. Since then, Southern California, and
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
in particular, have become a mecca for
triathlon
A triathlon is an endurance multisport race consisting of swimming, cycling, and running over various distances. Triathletes compete for fastest overall completion time, racing each segment sequentially with the time transitioning between the ...
and multi-sport racing, products, and culture.
Southern California is home to many sports franchises and networks such as
Fox Sports Net.
Many locals and tourists frequent the
Southern California coast for its beaches. Some of southern California's most popular beaches are
Malibu,
Laguna Beach,
La Jolla
La Jolla ( , ) is a hilly, seaside neighborhood within the city of San Diego, California, United States, occupying of curving coastline along the Pacific Ocean. The population reported in the 2010 census was 46,781.
La Jolla is surrounded o ...
,
Manhattan Beach, and
Hermosa Beach
Hermosa Beach (''Hermosa'', Spanish for "Beautiful") is a beachfront city in Los Angeles County in the U.S. state of California, United States. Its population was 19,728 at the 2020 U.S. Census. The city is located in the South Bay region of ...
. Southern California is also known for its mountain resort communities, such as
Big Bear Lake
Big Bear Lake is a reservoir in the San Bernardino Mountains, in San Bernardino County, California, United States. It is a snow and rain fed lake, having no other means of tributaries or mechanical replenishment. At a surface elevation of , i ...
,
Lake Arrowhead, and
Wrightwood, and their ski resorts, like
Bear Mountain,
Snow Summit,
Snow Valley Mountain Resort
Snow Valley Mountain Resort is a ski resort located in Running Springs, California, United States. It is the oldest continually operating ski resort in Southern California and is also one of four ski resorts in the San Bernardino National Fore ...
, and
Mountain High. The inland desert city of
Palm Springs
Palm Springs ( Cahuilla: ''Séc-he'') is a desert resort city in Riverside County, California, United States, within the Colorado Desert's Coachella Valley. The city covers approximately , making it the largest city in Riverside County by land ...
is also popular.
Northern boundary

Southern California is generally considered the area of California south of the latitude 35°45', approximately one-third of the state, formed by the northern boundaries of
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
,
Kern, and
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
counties, which are not exactly a straight line. Another definition for Southern California uses
Point Conception and the
Tehachapi Mountains
The Tehachapi Mountains (; Kawaiisu: ''Tihachipia'', meaning "hard climb") are a mountain range in the Transverse Ranges system of California in the Western United States. The range extends for approximately in southern Kern County and northw ...
as geographical landmarks for the northern boundary.

Following the acquisition of the territory of California by the United States, several pro-slavery politicians attempted to arrange the division of Alta California at 36 degrees, 30 minutes, the
line of the Missouri Compromise. Instead, the passing of the
Compromise of 1850
The Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850 that defused a political confrontation between slave and free states on the status of territories acquired in the Mexican–Ame ...
enabled California to be admitted to the Union as a
free state, preventing the southern half California from becoming its own separate
slave state
In the United States before 1865, a slave state was a state in which slavery and the internal or domestic slave trade were legal, while a free state was one in which they were not. Between 1812 and 1850, it was considered by the slave states ...
.
Subsequently, Californians (dissatisfied with inequitable taxes and land laws) and pro-slavery Southerners in the lightly populated "cow counties" of southern California attempted three times in the 1850s to achieve a separate statehood or territorial status
separate from Northern California. The last attempt, the Pico Act of 1859, was passed by the
California State Legislature
The California State Legislature is a bicameral state legislature consisting of a lower house, the California State Assembly, with 80 members; and an upper house, the California State Senate, with 40 members. Both houses of the Legislatur ...
and signed by
State Governor
A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political r ...
John B. Weller. It was approved overwhelmingly by nearly 75 percent of voters to form the proposed
Territory of Colorado. This territory was to include a portion of the much larger
Tulare County
Tulare County ( ) is a county located in the U.S. state of California. As of the 2020 census, the population was 473,117. The county seat is Visalia. The county is named for Tulare Lake, once the largest freshwater lake west of the Great Lakes ...
and all of
San Luis Obispo County. The proposal was sent to
Washington, D.C.
)
, image_skyline =
, image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
with a strong advocate in Senator
Milton Latham. However, the secession crisis following the
election
An election is a formal group decision-making process by which a population chooses an individual or multiple individuals to hold public office.
Elections have been the usual mechanism by which modern representative democracy has operat ...
of
Abraham Lincoln
Abraham Lincoln ( ; February 12, 1809 – April 15, 1865) was an American lawyer, politician, and statesman who served as the 16th president of the United States from 1861 until his assassination in 1865. Lincoln led the nation throu ...
in 1860 and the subsequent
American Civil War
The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states ...
led to the proposal never coming to a vote.
In 1900, the ''
Los Angeles Times
The ''Los Angeles Times'' (abbreviated as ''LA Times'') is a daily newspaper that started publishing in Los Angeles in 1881. Based in the LA-adjacent suburb of El Segundo since 2018, it is the sixth-largest newspaper by circulation in the U ...
'' defined Southern California as including "the seven counties of Los Angeles, San Bernardino, Orange, Riverside, San Diego, Ventura and Santa Barbara." This definition left out San Luis Obispo and Kern counties.
Southern California was the name of a
proposed new state which failed to get on the 2018 California ballot. The ballot measure proposed splitting the existing state into three parts.
In December 2020, during the
COVID-19 pandemic
The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identif ...
, the state government led by Governor
Gavin Newsom
Gavin Christopher Newsom (born October 10, 1967) is an American politician and businessman who has been the 40th governor of California since 2019. A member of the Democratic Party, he served as the 49th lieutenant governor of California f ...
divided the state into five regions for the purpose of issuing stay-at-home orders. The Southern California region consists of the following counties:
Imperial,
Inyo,
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
,
Mono,
Orange,
Riverside,
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
,
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
,
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
,
Santa Barbara and
Ventura. Kern County was grouped with other counties of the
San Joaquin Valley
The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
, California's central agricultural valley.
Urban landscape
Southern California consists of a heavily developed urban environment, home to some of the largest
urban areas in the state, along with vast areas that have been left undeveloped. It is the third most populated megalopolis in the United States, after the
Great Lakes Megalopolis and the
Northeast Megalopolis
The Northeast megalopolis, also known as the Northeast Corridor, Acela Corridor, Boston–Washington corridor, or BosWash, is the world's largest megalopolis in terms of economic output and the second most populous megalopolis in the United Sta ...
. Much of Southern California is famous for its large, spread-out, suburban communities and use of automobiles and highways. The dominant areas are Los Angeles,
Orange County,
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
, and
Riverside-
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
, each of which are the centers of their respective metropolitan areas, composed of numerous smaller cities and communities. The urban area is also host to an international
San Diego–Tijuana metropolitan region, created by the urban area spilling over into
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
.
Travelling south on
Interstate 5
Interstate 5 (I-5) is the main north–south Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels through the states of Califor ...
, the main barrier to continued urbanization is
Camp Pendleton
Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and is one of the largest Marine Corps bases in the United States. It is on the Southern California coast in San Diego County and is bordered by ...
. The cities and communities along
Interstate 15 and
Interstate 215 are so interrelated that
Temecula and
Murrieta have as much connection with the
San Diego metropolitan area
San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the ...
as they do with the
Inland Empire
The Inland Empire (IE) is a metropolitan area and region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. It includes the cities ...
. To the east, the
United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of th ...
considers the San Bernardino and Riverside County areas,
Riverside-San Bernardino area as a separate
metropolitan area
A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually c ...
from Los Angeles County. Newly developed
exurbs
An exurb (or alternately: exurban area) is an area outside the typically denser inner suburban area, at the edge of a metropolitan area, which has some economic and commuting connection to the metro area, low housing density, and growth. It s ...
formed in the
Antelope Valley, north of Los Angeles, the
Victor Valley, and the
Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacin ...
with the
Imperial Valley
, photo = Salton Sea from Space.jpg
, photo_caption = The Imperial Valley below the Salton Sea. The US-Mexican border runs diagonally across the lower left of the image.
, map_image = Newriverwatershed-1-.jpg
, map_caption = Map of Imperial ...
. Also, population growth was high in the
Bakersfield-Kern County,
Santa Maria and
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
areas.
Climate

Most of Southern California has a
Mediterranean
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ...
-like climate, with warm and dry summers, mild and wet winters, where cool weather and freezing temperatures are rare. Southern California contains other types of climates, including
semi-arid,
desert
A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About one ...
and
mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher ...
, with infrequent rain and many sunny days. Summers are hot or warm, and dry, while winters are mild, and rainfall is low to moderate depending on the area. Rain is infrequent, but is often heavy when it does occur, making
flash floods an aspect of living in Southern California. This climatic pattern was alluded to in the hit song "
It Never Rains (In Southern California)". While snow is very rare in lower elevations, mountains above receive plentiful snowfall in the winter.
Since the first decade of the 21st century,
droughts
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, an ...
and
wildfires have increased in frequency as a result of
climate change
In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...
.
Natural landscape

Southern California consists of one of the more varied collections of geologic, topographic, and natural ecosystem landscapes in a diversity outnumbering other major regions in the state and country. The region spans from Pacific Ocean
islands
An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
,
shoreline
A shore or a shoreline is the fringe of land at the edge of a large body of water, such as an ocean, sea, or lake. In physical oceanography, a shore is the wider fringe that is geologically modified by the action of the body of water past a ...
s, beaches, and
coastal plain
A coastal plain is flat, low-lying land adjacent to a sea coast. A fall line commonly marks the border between a coastal plain and a piedmont area. Some of the largest coastal plains are in Alaska and the southeastern United States. The Gulf C ...
s, through the
Transverse and
Peninsular Ranges
The Peninsular Ranges (also called the Lower California province) are a group of mountain ranges that stretch from Southern California to the southern tip of the Baja California peninsula; they are part of the North American Coast Ranges, whic ...
with their peaks, and into the large and small interior valleys, to the vast
deserts of California.
:Introductory categories include:
*
Beaches of southern California
*
Mountain ranges of Southern California
*
Rivers of Southern California
*
Deserts of California
*
Parks in Southern California
Geography
Geographic features

*
Angeles National Forest
The Angeles National Forest (ANF) of the U.S. Forest Service is located in the San Gabriel Mountains and Sierra Pelona Mountains, primarily within Los Angeles County in southern California. The ANF manages a majority of the San Gabriel Moun ...
(Los Angeles, San Bernardino, & Ventura Counties)
*
Antelope Hills (Kern County)
*
Antelope Valley (Los Angeles & Kern Counties)
*
Arroyo Seco (Los Angeles County)
*
Bacon Hills (Kern County)
*
Baldwin Hills (Los Angeles County)
*
Ballona Wetlands (Los Angeles County)
*
Big Bear Lake
Big Bear Lake is a reservoir in the San Bernardino Mountains, in San Bernardino County, California, United States. It is a snow and rain fed lake, having no other means of tributaries or mechanical replenishment. At a surface elevation of , i ...
(San Bernardino County)
*
Bissell Hills (Kern County)
*
Black Hills
The Black Hills ( lkt, Ȟe Sápa; chy, Moʼȯhta-voʼhonáaeva; hid, awaxaawi shiibisha) is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. Black Elk ...
(Kern County)
*
Bolsa Chica Estuary (Orange County)
*
Buena Vista Hills (Kern County)
*
Buena Vista Lake (Kern County)
*
Cajon Pass
Cajon Pass (; Spanish: ''Puerto del Cajón'' or ''Paso del Cajón'') is a mountain pass between the San Bernardino Mountains to the east and the San Gabriel Mountains to the west in Southern California. Created by the movements of the San And ...
(San Bernardino County)
*
Calico Mountains (San Bernardino County)
*
Channel Islands
The Channel Islands ( nrf, Îles d'la Manche; french: îles Anglo-Normandes or ''îles de la Manche'') are an archipelago in the English Channel, off the French coast of Normandy. They include two Crown Dependencies: the Bailiwick of Jerse ...
(Santa Barbara, Ventura & Los Angeles Counties)
*
Castaic Lake
Castaic Lake ( Chumash: ''Kaštiq'') is a reservoir formed by Castaic Dam on Castaic Creek, in the Sierra Pelona Mountains of northwestern Los Angeles County, California, United States, near the town of Castaic.
The California Office of En ...
(Los Angeles County)
*
Chino Hills (Orange, Los Angeles, Riverside & San Bernardino Counties)
*
Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacin ...
(Riverside County)
*
Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado ...
(San Bernardino, Riverside, Imperial, & San Diego Counties)
*
Colorado River
The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid watershed that encompasses parts of seven U.S. s ...
(San Bernardino, Riverside & Imperial Counties, Baja California & Sonora)
*
Conejo Valley (Los Angeles & Ventura Counties)
*
Cucamonga Valley (San Bernardino & Riverside Counties)
*
Cuyamaca Mountains (San Diego County)
*
Death Valley
Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. During summer, it is the hottest place on Earth.
Death Valley's Badwater Basin is the point of lowest elevation in North ...
(San Bernardino & Inyo Counties)
*
Diablo Range
The Diablo Range is a mountain range in the California Coast Ranges subdivision of the Pacific Coast Ranges in northern California, United States. It stretches from the eastern San Francisco Bay area at its northern end to the Salinas Valley ar ...
(Kern County)
*
Elk Hills (Kern County)
*
Elkhorn Hills (San Luis Obispo County)
*
El Mirage Lake (San Bernardino County)
*
El Paso Mountains (Kern County)
*
Greenhorn Mountains (Kern County)
*
High Desert (Los Angeles, Kern, Inyo, & San Bernardino Counties)
*
Horned Toad Hills (Kern County)
*
Imperial Valley
, photo = Salton Sea from Space.jpg
, photo_caption = The Imperial Valley below the Salton Sea. The US-Mexican border runs diagonally across the lower left of the image.
, map_image = Newriverwatershed-1-.jpg
, map_caption = Map of Imperial ...
(Imperial County)
*
Irish Hills (San Luis Obispo County)
*
In-Ko-Pah Mountains (San Diego County)
*
Inland Empire
The Inland Empire (IE) is a metropolitan area and region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. It includes the cities ...
(Riverside & San Bernardino Counties)
*
Jacumba Mountains (San Diego County)
*
Jawbone Canyon (Kern County)
*
Kern River (Kern County)
*
La Jolla Cove
La Jolla Cove is a small cove with a beach that is surrounded by cliffs in La Jolla, San Diego, California. Point La Jolla forms the south side of the cove. The area is protected as part of a marine reserve and is popular with snorkelers, swim ...
(San Diego County)
*
Laguna Mountains (San Diego County)
*
Lake Arrowhead (San Bernardino County)
*
Lake Casitas (Ventura County)
*
Lake Elsinore (Riverside County)
*
Lake Isabella (Kern County)
*
Lake Perris (Riverside County)
*
Lake Piru (Ventura County)
*
Lakeview Mountains (Riverside County)
*
Lake Webb (Kern County)
*
Little San Bernardino Mountains (Riverside & San Bernardino Counties)
*
Little Signal Hills (Kern County)
*
Los Angeles Basin
The Los Angeles Basin is a sedimentary basin located in Southern California, in a region known as the Peninsular Ranges. The basin is also connected to an anomalous group of east-west trending chains of mountains collectively known as the T ...
(Los Angeles & Orange Counties)
*
Los Angeles River (Los Angeles County)
*
Los Padres National Forest
Los Padres National Forest is a United States national forest in southern and central California. Administered by the United States Forest Service, Los Padres includes most of the mountainous land along the California coast from Ventura to Mon ...
(Kern, Los Angeles, San Luis Obispo, Santa Barbara, & Ventura Counties)
*
Lost Hills (Kern County)
*
Low Desert (Imperial, San Diego, Riverside & San Bernardino Counties)
*
Mojave Desert
The Mojave Desert ( ; mov, Hayikwiir Mat'aar; es, Desierto de Mojave) is a desert in the rain shadow of the Sierra Nevada mountains in the Southwestern United States. It is named for the indigenous Mojave people. It is located primarily in ...
(Los Angeles, Kern & San Bernardino Counties)
*
Mojave River
The Mojave River is an intermittent river in the eastern San Bernardino Mountains and the Mojave Desert in San Bernardino County, California, United States. Most of its flow is underground, while its surface channels remain dry most of the time ...
(San Bernardino County)
*
Mount San Antonio
Mount San Antonio, commonly referred to as Mount Baldy or Old Baldy, is a summit in the San Gabriel Mountains on the border of Los Angeles and San Bernardino counties of California. Lying within the San Gabriel Mountains National Monument a ...
(Los Angeles County)
*
New River (Imperial County, Mexicali Municipality)
*
Nine Sisters (San Luis Obispo County)
*
Ojai Valley (Ventura County)
*
Orange Coast (Orange County)
*
Oxnard Plain (Ventura County)
*
Palomar Mountain
Palomar Mountain ( ; es, Monte Palomar ) is a mountain ridge in the Peninsular Ranges in northern San Diego County. It is famous as the location of the Palomar Observatory and Hale Telescope, and known for the Palomar Mountain State Park.
His ...
(San Diego County)
*
Palo Verde Valley (Riverside & Imperial Counties)
*
Palos Verdes Peninsula
The Palos Verdes Peninsula (''Palos Verdes'', Spanish for "Green Sticks") is a landform and a geographic sub-region of the Los Angeles metropolitan area, within southwestern Los Angeles County in the U.S. state of California. Located in the Sou ...
(Los Angeles County)
*
Panamint Range
The Panamint Range is a short rugged fault-block mountain range in the northern Mojave Desert, within Death Valley National Park in Inyo County, eastern California. Dr. Darwin French is credited as applying the term Panamint in 1860 during hi ...
(Inyo County)
*
Peninsular Ranges
The Peninsular Ranges (also called the Lower California province) are a group of mountain ranges that stretch from Southern California to the southern tip of the Baja California peninsula; they are part of the North American Coast Ranges, whic ...
(San Diego, Riverside, & Orange Counties)
*
Pleito Hills (Kern County)
*
Point Loma (San Diego County)
*
Point Mugu
Point Mugu (, Chumash: ''Muwu'') is a cape or promontory within Point Mugu State Park on the Pacific Coast in Ventura County, near the city of Port Hueneme and the city of Oxnard. The name is believed to be derived from the Chumash Indian ...
(Ventura County)
*
Point of Rocks (Kern County)
*
Pomona Valley (Los Angeles & San Bernardino Counties)
*
Providence Mountains (San Bernardino County)
*
Puente Hills (Los Angeles County)
*
Pyramid Lake (Los Angeles County)
*
Rand Mountains (Kern County)
*
Rio Hondo (Los Angeles County)
*
Rosamond Hills (Kern County)
*
Saddleback Valley (Orange County)
*
Salton Sea
The Salton Sea is a shallow, landlocked, highly saline body of water in Riverside and Imperial counties at the southern end of the U.S. state of California. It lies on the San Andreas Fault within the Salton Trough that stretches to the Gul ...
(Imperial & Riverside Counties)
*
San Andreas Fault
The San Andreas Fault is a continental transform fault that extends roughly through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). ...
(All Counties)
*
San Bernardino Mountains
The San Bernardino Mountains are a high and rugged mountain range in Southern California in the United States. Situated north and northeast of San Bernardino and spanning two California counties, the range tops out at at San Gorgonio Mountain ...
(San Bernardino County)
*
San Bernardino National Forest (Riverside & San Bernardino Counties)
*
San Bernardino Valley (San Bernardino County)
*
San Diego Bay
San Diego Bay is a natural harbor and deepwater port located in San Diego County, California near the U.S.–Mexico border. The bay, which is long and wide, is the third largest of the three large, protected natural bays on California's of ...
(San Diego County)
*
San Diego River
The San Diego River is a river in San Diego County, California. It originates in the Cuyamaca Mountains northwest of the town of Julian, then flows to the southwest until it reaches the El Capitan Reservoir, the largest reservoir in the river ...
(San Diego County)
*
San Emigdio Mountains (Los Angeles, Ventura, & Kern Counties)
*
San Fernando Valley (Los Angeles County)
*
San Gabriel Mountains (Los Angeles & San Bernardino Counties)
*
San Gabriel River (Los Angeles County)
*
San Gabriel Valley
The San Gabriel Valley ( es, Valle de San Gabriel) is one of the principal valleys of Southern California, lying immediately to the east of the eastern city limits of the city of Los Angeles, and occupying the vast majority of the eastern part ...
(Los Angeles County)
*
San Jacinto Mountains
The San Jacinto Mountains (''Avii Hanupach''Munro, P., et al. ''A Mojave Dictionary''. Los Angeles: UCLA. 1992. in Mojave) are a mountain range in Riverside County, located east of Los Angeles in southern California in the United States. The mo ...
(Riverside County)
*
San Jacinto River (Riverside County)
*
San Joaquin Valley
The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
(Kern County)
*
San Luis Rey River (San Diego County)
*
San Pedro Bay (Los Angeles County)
*
San Rafael Mountains (Santa Barbara County)
*
Santa Ana Mountains
The Santa Ana Mountains are a short peninsular mountain range along the coast of Southern California in the United States. They extend for approximately southeast of the Los Angeles Basin largely along the border between Orange and Riverside ...
(Orange & Riverside Counties)
*
Santa Ana River (San Bernardino, Riverside & Orange Counties)
*
Santa Ana Valley (Orange County)
*
Santa Catalina Island (Los Angeles County)
*
Santa Clara River (Ventura County)
*
Santa Clara River Valley (Ventura County)
*
Santa Clarita Valley (Los Angeles County)
*
Santa Margarita River (Riverside, Orange & San Diego Counties)
*
Santa Monica Bay (Los Angeles County)
*
Santa Monica Mountains
The Santa Monica Mountains is a coastal mountain range in Southern California, next to the Pacific Ocean. It is part of the Transverse Ranges. Because of its proximity to densely populated regions, it is one of the most visited natural areas in ...
(Los Angeles & Ventura Counties)
*
Santa Rosa Mountains (Riverside, Imperial & San Diego Counties)
*
Santa Susana Mountains
The Santa Susana Mountains are a transverse range of mountains in Southern California, north of the city of Los Angeles, in the United States. The range runs east-west, separating the San Fernando and Simi valleys on its south from the Santa Cl ...
(Los Angeles & Ventura Counties)
*
Santa Ynez Mountains
The Santa Ynez Mountains are a portion of the Transverse Ranges, part of the Pacific Coast Ranges of the west coast of North America. It is the westernmost range in the Transverse Ranges.
The range is a large fault block of Cenozoic age creat ...
(Santa Barbara & Ventura Counties)
*
Santa Ynez Valley (Santa Barbara County)
*
Scodie Mountains (Kern County)
*
Sequoia National Forest (Kern County)
*
Shale Hills (Kern County)
*
Sierra Nevada
The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies prima ...
(Kern County)
*
Sierra Pelona Mountains (Los Angeles & Kern Counties)
*
Simi Hills
The Simi Hills are a low rocky mountain range of the Transverse Ranges in eastern Ventura County and western Los Angeles County, of southern California, United States.
Geography
The Simi Hills are aligned east-west and run for , and average a ...
(Los Angeles & Ventura Counties)
*
Simi Valley
Simi Valley (; Chumash: ''Shimiyi'') is a city in the valley of the same name in the southeast region of Ventura County, California, United States. Simi Valley is from Downtown Los Angeles, making it part of the Greater Los Angeles Area. The ...
(Ventura County)
*
Sweetwater River (San Diego County)
*
Tehachapi Mountains
The Tehachapi Mountains (; Kawaiisu: ''Tihachipia'', meaning "hard climb") are a mountain range in the Transverse Ranges system of California in the Western United States. The range extends for approximately in southern Kern County and northw ...
(Kern & Los Angeles Counties)
*
Tejon Hills (Kern County)
*
Temescal Mountains (Riverside County)
*
Telephone Hills (Kern County)
*
Temblor Range (Kern & San Luis Obispo Counties)
*
Tijuana River (San Diego County)
*
Topatopa Mountains (Ventura County)
*
Turtle Mountains (San Bernardino County)
*
Ventura River (Ventura County)
*
Verdugo Mountains (Los Angeles County)
*
Victor Valley (San Bernardino County)
Geology
List of major fault zones
Note: Plate boundary faults are indicated with a (#) symbol.
*
Brawley Seismic Zone
*
Chino Fault
*
Elsinore Fault Zone
*
Elysian Park Fault
*
Garlock Fault
*
Hosgri Fault
*
Imperial Fault Zone
*
Laguna Salada Fault
*
Newport–Inglewood Fault
*
Peninsular Ranges
The Peninsular Ranges (also called the Lower California province) are a group of mountain ranges that stretch from Southern California to the southern tip of the Baja California peninsula; they are part of the North American Coast Ranges, whic ...
*
Puente Hills Fault
*
Raymond Fault
*
Rose Canyon Fault
*
Salton Trough
*
Salinian Block
The Salinian Block or Salinian terrane is a geologic terrane which lies west of the main trace of the San Andreas Fault system in California. It is bounded on the south by the Big Pine Fault in Ventura County and on the west by the Nacimiento F ...
*
San Andreas Fault
The San Andreas Fault is a continental transform fault that extends roughly through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). ...
#
*
San Cayetano Fault
*
San Felipe Fault Zone
*
San Gabriel Fault
*
San Jacinto Fault Zone
*
Santa Maria River Fault
*
Santa Ynez Fault
*
Shoreline Fault
*
Ventura Fault
*
White Wolf Fault
*
Whittier Fault
*
Yorba Linda Fault
Earthquakes
Each year, Southern California has about 10,000 earthquakes. Nearly all of them are so small that they are not felt. Only several hundred have been greater than
magnitude 3.0, and only about 15–20 have been greater than magnitude 4.0. The magnitude 6.7
1994 Northridge earthquake
The 1994 Northridge earthquake was a moment 6.7 (), blind thrust earthquake that occurred on January 17, 1994, at 4:30:55 a.m. PST in the San Fernando Valley region of the City of Los Angeles.
The quake had a duration of approximate ...
was particularly destructive, causing a substantial number of deaths, injuries, and structural collapses as well as the most property damage of any earthquake in U.S. history at an estimated $20 billion.
Many
faults are able to produce a magnitude greater than 6.7 earthquake, such as the
San Andreas Fault
The San Andreas Fault is a continental transform fault that extends roughly through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). ...
, which can produce a magnitude 8.0 event. Other faults include the
San Jacinto Fault, the
Puente Hills Fault, and the
Elsinore Fault Zone. The
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...
(USGS) has released a California earthquake forecast, which models earthquake occurrence in California.
=List of earthquakes
=
This is a partial list of earthquakes in Southern California. For a full list, see
List of earthquakes in California.
Note: Earthquakes with epicenters in the Los Angeles Metro Area are marked with the (#) symbol. Other earthquakes mentioned means shaking was felt.
*
1812 San Juan Capistrano earthquake
*
1812 Ventura earthquake
*
1857 Fort Tejon earthquake
*
1892 Laguna Salada earthquake
*
1899 San Jacinto earthquake
*
1918 San Jacinto earthquake
*
1933 Long Beach earthquake #
*
1940 El Centro earthquake
*
1948 Desert Hot Springs earthquake
*
1971 San Fernando earthquake #
*
1979 Imperial Valley earthquake
*
1968 Borrego Mountain earthquake
*
1986 North Palm Springs earthquake
*
1987 Superstition Hills earthquakes
*
1987 Whittier Narrows earthquake #
*
1991 Sierra Madre earthquake #
*
1992 Big Bear earthquake #
*
1992 Landers earthquake
The 1992 Landers earthquake occurred on Sunday, June 28 with an epicenter near the town of Landers, California, in San Bernardino County. The shock had a moment magnitude of 7.3 and a maximum Mercalli intensity of IX (''Violent'').
Earthquake ...
*
1994 Northridge earthquake
The 1994 Northridge earthquake was a moment 6.7 (), blind thrust earthquake that occurred on January 17, 1994, at 4:30:55 a.m. PST in the San Fernando Valley region of the City of Los Angeles.
The quake had a duration of approximate ...
#
*
2008 Chino Hills earthquake #
*
2010 Baja California earthquake
*
2019 Ridgecrest earthquakes
Population

As of the
2020 United States Census
The United States census of 2020 was the twenty-fourth decennial United States census. Census Day, the reference day used for the census, was April 1, 2020. Other than a pilot study during the 2000 census, this was the first U.S. census to off ...
, Southern California has a population of 23,762,904. Despite a reputation for high growth rates, Southern California's population has grown slower than the state average since the 2000s. This is due to California's growth becoming concentrated in the northern part of the state as result of a stronger, tech-oriented economy in the
Bay Area and an emerging
Greater Sacramento
The Greater Sacramento area refers to a metropolitan area, metropolitan region in Northern California comprising either the U.S. Census Bureau defined Sacramento–Roseville–Arden-Arcade metropolitan statistical area or the larger Sacramento– ...
region.
Southern California consists of one Combined Statistical Area, eight Metropolitan Statistical Areas, one international
metropolitan area
A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually c ...
, and multiple metropolitan divisions. The region is home to two extended metropolitan areas that exceed five million in population. These are the Greater Los Angeles Area at 17,786,419, and
San Diego–Tijuana at 5,105,768. Of these metropolitan areas, the Los Angeles-Long Beach-Santa Ana metropolitan area, Riverside-San Bernardino-Ontario metropolitan area, and Oxnard-Thousand Oaks-Ventura metropolitan area form Greater Los Angeles; while the El Centro metropolitan area and San Diego-Carlsbad-San Marcos metropolitan area form the Southern Border Region. North of Greater Los Angeles are the
Santa Barbara,
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
, and
Bakersfield metropolitan areas.
Cities
Los Angeles (with a population of approximately 3.9 million people) and San Diego (at nearly 1.4 million people) are the two largest cities in all of California and are among the top eight largest cities in the United States. In Southern California, there are also 14 cities with more than 200,000 residents and 48 cities over 100,000 residents. Many of Southern California's most developed cities lie along or in close proximity to the coast, with the exception of San Bernardino and Riverside.
Counties
*
Imperial
*
Kern
*
Los Angeles
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
*
Orange
*
Riverside
*
San Bernardino
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 cen ...
*
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
*
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
*
Santa Barbara
*
Ventura
Literature
Southern California is home to most popular and famous literature in the region. These books include California by Kevin Starr, Malibu Farm Cookbook by Helene Henderson, L.A. Noir by John Buntin, The Mountains of California by John Muir, The New California Wine by Jon Bonné, and My Hollywood by Mona Simpson. Most of them are well received and nominated for rewards.
Economy
Industries
Southern California has a diverse economy and is one of the largest economies in the United States. It is dominated by and heavily dependent upon the abundance of petroleum, as opposed to other regions where automobiles are not nearly as dominant, due to the vast majority of transport that runs on this fuel. Southern California is famous for tourism and the entertainment industry. Other industries include software, automotive, ports, finance, biomedical, and regional logistics. The region was a leader in the housing bubble from 2001 to 2007 and has been heavily impacted by the housing crash.
Since the 1920s, motion pictures, petroleum, and aircraft manufacturing have been major industries. In one of the richest agricultural regions in the U.S., cattle and citrus were major industries until farmlands were turned into suburbs. Although military spending cutbacks have had an impact, aerospace continues to be a major factor.
Major central business districts

Southern California is home to many major business districts. Central business districts (CBD) include Downtown Los Angeles, Downtown Riverside, Downtown San Bernardino, Downtown San Diego, and the South Coast Metro. Within the Los Angeles Area are the major business districts of Pasadena, California, Downtown Pasadena, Burbank, California, Downtown Burbank, Santa Monica, California, Downtown Santa Monica, Glendale, California, Downtown Glendale and Downtown Long Beach. Los Angeles itself has many business districts, such as Downtown Los Angeles and those lining Wilshire Boulevard including Mid-Wilshire, the Miracle Mile, Los Angeles, Miracle Mile, Downtown Beverly Hills and Westwood, Los Angeles, Westwood; others include Century City, Los Angeles, Century City and Warner Center, Los Angeles, Warner Center in the
San Fernando Valley. The area of Santa Monica and Venice (and perhaps some of Culver City) is informally referred to as "Silicon Beach" because of the concentration of financial and marketing technology-centric firms located in the region.
The San Bernardino-Riverside Area maintains the business districts of Downtown San Bernardino, Hospitality Lane District, San Bernardino, California, Hospitality Business/Financial Centre, University District, San Bernardino, University District which are in the cities of San Bernardino and Riverside.
In Orange County, has highly developed suburban business centers (also known as edge cities) including the Anaheim–Santa Ana edge city along I-5; and another, the South Coast Plaza–John Wayne Airport edge city that stretches from the South Coast Metro to the Irvine Business Complex; Newport Center, Newport Beach, California, Newport Center; and Irvine Spectrum. Downtown Santa Ana is an important government, arts and entertainment, and retail district.
Downtown San Diego is the CBD of San Diego, though the city is filled with business districts. These include Carmel Valley, San Diego, Carmel Valley, Del Mar Heights, San Diego, Del Mar Heights, Mission Valley, Rancho Bernardo, Sorrento Mesa, and University City, San Diego, University City. Most of these districts are located in Northern San Diego and some within North County regions.
Theme parks and waterparks

Los Angeles
* Dry Town Water Park
* Pacific Park
* Raging Waters San Dimas
* Six Flags Hurricane Harbor
* Six Flags Magic Mountain
* Universal Studios Hollywood
Orange County
* Disney California Adventure
* Disneyland Park
* Knott's Berry Farm
* Knott's Soak City
* Wild Rivers (water park)
Riverside & San Bernardino
* Castle Park (amusement park), Castle Park
* Wet'n'Wild Palm Springs
San Diego
* Sesame Place San Diego
* Belmont Park (San Diego), Belmont Park
* Legoland California
* Legoland Waterpark
* San Diego Zoo
* San Diego Zoo Safari Park
* SeaWorld San Diego
Vineyard-Winery American Viticultural Area (AVA) districts
:California wine AVA-American Viticultural Areas in southern California:
*South Coast AVA
**Cucamonga Valley AVA
**Malibu-Newton Canyon AVA
**Ramona Valley AVA
**Saddle Rock-Malibu AVA
**Temecula Valley AVA
*Leona Valley AVA
*Central Coast AVA
**Arroyo Grande Valley AVA
**Edna Valley AVA
**San Pasqual Valley AVA
**Santa Maria Valley AVA
**Santa Ynez Valley AVA
**Sta. Rita Hills AVA
**York Mountain AVA
Shopping malls
* South Coast Plaza
* Westfield Century City
* Citadel Outlets
* Fashion Valley Mall, Fashion Valley
* Westfield Topanga & The Village
* Ontario Mills
* Glendale Galleria
* FIGat7th
Transportation
:''See: :Transportation in Southern California, Transportation in Southern California''
Southern California is home to Los Angeles International Airport, the second-busiest airport in the United States by passenger volume (see World's busiest airports by passenger traffic) and the third-busiest by international passenger volume (see Busiest airports in the United States by international passenger traffic); San Diego International Airport, the busiest single-runway airport in the world; Van Nuys Airport, the world's busiest general aviation airport; major commercial airports at San Bernardino International Airport, San Bernardino, John Wayne Airport, Orange County, Meadows Field, Bakersfield, LA/Ontario International Airport, Ontario, Hollywood Burbank Airport, Burbank and Long Beach Airport, Long Beach; and numerous smaller commercial and general aviation airports.
Six of the seven lines of the commuter rail system, Metrolink (California), Metrolink, run out of Downtown Los Angeles, connecting Los Angeles,
Ventura, San Bernardino, Riverside, Orange, and San Diego counties with the other line connecting San Bernardino, Riverside, and Orange counties directly.
Southern California is also home to the Port of Los Angeles, the country's busiest commercial port; the adjacent Port of Long Beach, the country's second busiest container port; and the Port of San Diego.
Airports
The following table shows all airports listed by the Federal Aviation Association (FAA) as a hub airport:
Freeways and highways

Sections of the Southern California freeway system are often referred to by names rather than by the official numbers.
Public transportation

:''See: :Public transportation in Southern California, Public transportation in Southern California''
*Antelope Valley Transit Authority
*Big Blue Bus (Santa Monica)
*Gold Coast Transit (Ventura County)
*Golden Empire Transit (Bakersfield)
*Los Angeles County Metropolitan Transportation Authority
*Metrolink (California), Metrolink
*North County Transit District (northern San Diego County)
*Omnitrans (southwestern San Bernardino County)
*Orange County Transportation Authority
*Riverside Transit Agency (western Riverside County)
*San Diego Coaster (Oceanside to San Diego)
*San Diego Metropolitan Transit System
*San Luis Obispo Regional Transit Authority
*Santa Barbara, California, Santa Barbara MTD
Communication
Telephone area codes
*Area code 213, 213 – Central Los Angeles
*Area code 310, 310 – Westside (Los Angeles County), West Los Angeles, Inglewood, California, Inglewood, Santa Monica, South Bay, Los Angeles, South Bay and Santa Catalina Island, California, Catalina Island
*Area code 323, 323 – Overlay with 213
*Area code 424, 424 – Overlay with 310
*Area code 442, 442 – Overlay with 760
*Area code 562, 562 – Long Beach, Gateway Cities, and parts of northern
Orange County
*Area code 619, 619 – most of San Diego County including
San Diego
San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
*Area code 626, 626 – most of
San Gabriel Valley
The San Gabriel Valley ( es, Valle de San Gabriel) is one of the principal valleys of Southern California, lying immediately to the east of the eastern city limits of the city of Los Angeles, and occupying the vast majority of the eastern part ...
including Pasadena
*Area code 657, 657 – Overlay with 714
*Area code 661, 661 – Bakersfield, Santa Clarita, and
Antelope Valley
*Area code 714, 714 – Northern Orange County (including Anaheim, Santa Ana, California, Santa Ana, and Huntington Beach)
*Area code 760, 760 – Northern San Diego County (including Oceanside, California, Oceanside and Escondido, California, Escondido), Imperial County,
Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacin ...
, Blythe, California, Blythe, Twentynine Palms,
Victor Valley, Barstow, California, Barstow, and Ridgecrest, California, Ridgecrest
*Area code 805, 805 –
Santa Barbara,
Ventura and
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly ha ...
Counties
*Area code 818, 818 – Eastern
Conejo Valley, Crescenta Valley,
San Fernando Valley including Glendale, California, Glendale and Burbank, California, Burbank
*Area code 820, 820 – Overlay with 805
*Area code 840, 840 – Overlay with 909
*Area code 858, 858 – Overlay with 619
*Area code 909, 909 – Southwestern San Bernardino County, eastern Los Angeles County, and portions of northwestern Riverside County
*Area code 949, 949 – Southern
Orange County (including Irvine, California, Irvine, Newport Beach, Laguna Niguel, and San Clemente)
*Area code 951, 951 – Western Riverside County including
Riverside and
Temecula
Colleges and universities

The Tech Coast is a moniker that has gained use as a descriptor for the region's diversified technology and industrial base as well as its multitude of prestigious and world-renowned research universities and other public and private institutions. Amongst these include five University of California campuses (University of California, Irvine, Irvine, University of California, Los Angeles, Los Angeles, University of California, Riverside, Riverside, University of California, Santa Barbara, Santa Barbara, and University of California, San Diego, San Diego), 12 California State University campuses (California State University, Bakersfield, Bakersfield, California State University, Channel Islands, Channel Islands, California State University, Dominguez Hills, Dominguez Hills, California State University, Fullerton, Fullerton, California State University, Los Angeles, Los Angeles, California State University, Long Beach, Long Beach, California State University, Northridge, Northridge, California State Polytechnic University, Pomona, Pomona, California State University, San Bernardino, San Bernardino, San Diego State University, San Diego, California State University, San Marcos, San Marcos, and California Polytechnic State University, San Luis Obispo); and private institutions such as the California Institute of Technology, Azusa Pacific University, Chapman University, the Claremont Colleges (Claremont McKenna College, Harvey Mudd College, Pitzer College, Pomona College, Scripps College, Claremont Graduate University and Keck Graduate Institute), Loma Linda University, Loyola Marymount University, Occidental College, Pepperdine University, University of Redlands, University of San Diego and the University of Southern California.
Parks and recreation areas
Numerous parks provide recreation opportunities and open space. Locations include:
*National Park Service
**Cabrillo National Monument
**Carrizo Plain National Monument
**Castle Mountains National Monument
**Cesar E. Chavez National Monument
**Channel Islands National Park
**Death Valley National Park
**Joshua Tree National Park
**Mojave National Preserve
**Santa Monica Mountains National Recreation Area
*Major State park, State Parks – ''including:''
**Anza-Borrego Desert State Park
**Crystal Cove State Park
**Cuyamaca Rancho State Park
**Chino Hills State Park
**Fort Tejon State Historic Park
**Kenneth Hahn State Recreation Area
**Mount San Jacinto State Park
**Malibu Creek State Park
**Red Rock Canyon State Park (California)
**Topanga State Park
*Major State Historic Parks – ''including:''
**California Citrus State Historic Park
**Presidio of Santa Barbara, El Presidio de Santa Barbara State Historic Park
**La Purísima Mission State Historic Park
**Los Encinos State Historic Park
**Mission San Luis Obispo de Tolosa
**Old Town San Diego State Historic Park
**Rancho Los Encinos
**Santa Susana Pass State Historic Park
**Tule Elk State Natural Reserve
**Watts Towers
**Will Rogers State Historic Park
Sports
Major professional sports teams in Southern California include:
*NFL (American football) Los Angeles Rams, Los Angeles Chargers
*NBA (Basketball) Los Angeles Lakers, Los Angeles Clippers
*MLB (Baseball) Los Angeles Dodgers, Los Angeles Angels, San Diego Padres
*NHL (Ice hockey) Los Angeles Kings, Anaheim Ducks
*MLS (Soccer) LA Galaxy, Los Angeles FC
*NWSL(Soccer) Angel City FC, San Diego Wave FC
*WNBA(Basketball) Los Angeles Sparks
Southern California also is home to a number of popular NCAA sports programs such as the UCLA Bruins, the USC Trojans, and the San Diego State Aztecs. The Bruins and the Trojans both field football teams in NCAA Division I in the Pac-12 Conference, and there is a longtime UCLA–USC rivalry, rivalry between the schools.
See also
*:History of Southern California, History of Southern California
*:California ranchos, California ranchos – ''Southern California Counties categories''
*:Public transportation in Southern California, Public transportation in Southern California
*California earthquake forecast
*California megapolitan areas
*Geography of Southern California
*Largest cities in Southern California
*List of regions of California#Southern California
*Megaregions of the United States
*San Angeles
*South Coast (California), South Coast
*Southern California Association of Governments
References
Further reading
*
*
* , focus on planning, infrastructure, water and business.
* , on Henry Edwards Huntington (1850–1927), railroad executive and collector, who helped build LA and southern California through the Southern Pacific railroad and trolleys.
*
*
online*
excerpt and text search covers military and industrial roles.
*
*
*
* , a historical geography
*
in JSTOR* , covers 1880s–1940
*
*
External links
California Historical Society Collection, 1860–1960– University of Southern California Libraries, USC Libraries Digital Collections
Historical Society of Southern California
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Southern California,
Megapolitan areas of California
Regions of California