
Right
Southern California, or
SoCal, is defined as the southern portion of the
U.S. state of California
. Its population encompasses three major
metropolitan areas, each of which have over 3 million people; the
Los Angeles Metropolitan
Area with over 12 million inhabitants, the San
Bernardino-Riverside Metropolitan Area
with over 4 million inhabitants, and the San Diego
Metropolitan Area
with over 3
million inhabitants. The region is home to approximately 24
million people, which is more than half of California's population,
and is the nation's second most populous region behind the urban
seaboard of the
Northeastern
United States.
Though there is no official definition for the northern boundary of
Southern California, most definitions in use include all the land
south of the
Tehachapi
Mountains, located about north of Los Angeles.
On the
west of Southern California lies the Pacific Ocean
; to the south is the international border between the United
States and Mexico
; to the east
are the Mojave and Colorado Deserts and the Colorado River
at the state's border with Arizona
and Nevada
.
Significance
Within its boundaries is a major
world
city, Los Angeles, and three of the
country's largest
metropolitan areas.
With a population of 1,336,865, San Diego is the second most
populous city in California, and the eighth most populous in the
U.S.
Its
counties of Los
Angeles, Orange
, San Diego
, San Bernardino
, and Riverside
are in the top 15 most populous counties in the
United States and all five are the top 5 most populous counties in
California. The region is also home to Los Angeles
International Airport
, the third-busiest airport in the United States by
passenger volume (see World's busiest
airports by passenger traffic) and the second by international
passenger volume, San Diego International
Airport
the busiest single runway airport in the world,
Van Nuys
Airport
(see
Busiest airports in the United States by international passenger
traffic), the world's busiest general aviation airport, major commercial
airports at Orange
County
, Ontario
, Burbank
and Long
Beach
and numerous smaller commercial and general
aviation airports. Southern California is also home to the
Port of Los
Angeles
, the United States' busiest commercial port, the
adjacent Port of Long
Beach
, and the Port of San
Diego. Also of note in the region is the
freeway system, which is the
world's busiest.
Six of the seven lines of the commuter rail system, 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.
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 (Los
Angeles
, Irvine
, Riverside
, Santa Barbara
, and San Diego
campuses), 10 California State University
campuses (Channel Islands
, Dominguez Hills
, Fullerton
, Long Beach
, Los
Angeles
, Pomona
, Northridge
, San Bernardino
, San Diego
, and San
Marcos
campuses), as well as private institutions such as
Caltech
, the University of Southern
California
, Pepperdine University
, Loyola Marymount University
,Chapman
University, the Claremont Colleges and the
University of San Diego
(USD).
Southern
California is also the entertainment (motion picture, television, and recorded music) capital of the
world and is home to Hollywood
, the center of the motion picture industry.
Headquartered in Southern California are
The Walt Disney Company
(which also owns ABC),
Sony Pictures, Universal, MGM,
Paramount Pictures (parent
company of Dreamworks
), 20th Century Fox
and Warner Brothers, and as well as
Univision, Activision, and THQ.
Southern
California is also home to the world's largest adult entertainment industry, located primarily
in the San Fernando
Valley
.
Southern California is home to many sports franchises and sports
networks such as
Fox Sports Net.
Professional teams that are located in the region include the
Los Angeles Lakers,
Los Angeles Clippers,
Los Angeles Dodgers,
Los Angeles Angels of Anaheim,
San Diego Padres,
Los Angeles Kings,
Anaheim Ducks,
Los Angeles Galaxy,
Chivas USA,
Los
Angeles Riptide, and
San Diego
Chargers.
Southern California also is home to a number
of popular NCAA sports programs, such as the UCLA Bruins, the USC
Trojans, and the SDSU
Aztecs
.
Northern boundary

Southern California counties
The region's northern boundary is subject to a broader degree of
interpretation than those of the West, East, and South.
The most
commonly used physical boundary between "Southern California" and
the rest of the state is the Tehachapi Range , located about north of
Los Angeles, and the Transverse
Ranges in Santa Barbara County
west to Point Conception
. Seven full counties (listed in descending
order of population) are included: Los Angeles, San
Diego
, Orange
, San Bernardino
, Riverside
, Ventura
, and Imperial
, as well as the southern part of Santa
Barbara
.
A more
inclusive definition coinciding neatly with county lines uses the
sixth standard parallel south of
Mount
Diablo
(144 miles south of Mt. Diablo at 35°47′28″N)
which forms the northern borders of San Luis
Obispo
, Kern
, and San Bernardino
counties as the boundary. San Luis
Obispo
, Kern County, California
and the remainder of Santa
Barbara
, are included under this definition as well, for a
total of ten counties.
Kern
County is also part of the San Joaquin Valley
, and San Luis Obispo and Santa Barbara Counties are
also considered part of California's Central Coast.
Urban landscape
Southern California consists of a heavily developed
urban environment, along with vast arid areas
that have been left undeveloped.
It is the second-largest urbanized region
in the United States, second only to the Washington,
D.C.
/Philadelphia
/New
York
/Boston
Northeastern
Megalopolis. Whereas these cities are dense, with major
downtown populations and significant rail and transit systems, 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
, Riverside
, and San Bernardino
, each of which is the center of its respective
metropolitan area, composed of numerous smaller cities and
communities.
Traveling
south on Interstate 5, the
main gap to continued urbanization is Camp Pendleton
. The communities along Interstate 15 and Interstate 215 are so
inter-related that Temecula
has as much connection with San Diego County as it
does with the Inland Empire
. To the east, the United States Census Bureau
considers the San Bernardino and Riverside County areas, Riverside-San Bernardino Area
as a separate metropolitan area from Los Angeles
County. While many commute to L.A. and Orange Counties,
there are some differences in development, as most of San
Bernardino and Riverside Counties were developed in the 1980s and
1990s.
Regions
Major cities (over 200,000 inhabitants)
Population figures for California cities are 2008 State of
California estimates
- Los Angeles
- 4,045,873
- San Diego
- 1,336,865
- Long Beach
- 492,642
- Santa Ana
- 353,184
- Anaheim
- 346,823
- Bakersfield
- 328,692
- Riverside
- 296,842
- Chula Vista
- 231,305
- Irvine
- 209,806
- Glendale
- 207,157
- San
Bernardino
- 205,493
- Huntington Beach
- 201,993
Other cities with over 100,000 inhabitants

Ventura City Hall in Old Town
Ventura

Downtown Santa Monica
- Oxnard
- 197,067
- Fontana
- 188,498
- Moreno Valley
- 183,860
- Oceanside
- 178,806
- Santa Clarita
- 177,045
- Rancho Cucamonga
- 174,308
- Ontario
- 173,690
- Garden Grove
- 173,067
- Pomona
- 163,405
- Palmdale
- 155,346
- Torrance
- 148,965
- Pasadena
- 148,126
- Corona
- 147,428
- Lancaster
- 145,243
- Escondido
- 143,389
- Orange
- 140,849
- Fullerton
- 137,437
- Thousand Oaks
- 128,650
- El Monte
- 126,053
- Simi Valley
- 125,657
- Inglewood
- 118,878
- Costa Mesa
- 113,955
- Downey
- 113,379
- West Covina
- 112,666
- Norwalk
- 109,695
- Ventura
- 108,261
- Burbank
- 108,029
- Victorville
- 107,408
- Carlsbad
- 103,811
- South Gate
- 102,816
- Temecula
- 101,057
- Murrieta
- 100,173
Other county seats (under 100,000 inhabitants)
Counties
- South of the San Gabriel and San Bernardino mountains
- North of the San Gabriel and San Bernardino mountains
Santa
Barbara
, San Luis Obispo
, and Ventura
are also counties in the Central Coast.
Geographical regions

Marriott Hotel in downtown San
Diego
Southern
California is also divided into the Coastal Region (Orange County,
Los Angeles County, San Diego County, Santa Barbara County, and
Ventura County) and the larger, more sparsely populated, desert
Inland
Empire
(San Bernardino County, Riverside County, and
Imperial County). The division between the Coastal Regions
and the Inland Empire winds along the backs of the coastal mountain
ranges such as the
Santa Ana
Mountains.A related geographical term is
cismontane
Southern California, which refers to the portion of California
on the coastal side of the
Transverse and
Peninsular mountain ranges. The term
"Southern California" often refers to this region specifically, as
opposed to largely desert areas comprising the rest of the southern
portion of the state, which are referred to as
transmontane
Southern California.
Geographic features

Los Angeles at night

View from La Jolla Cove in San
Diego
Coachella Valley Preserve in the Colorado Desert in Riverside
County
- Antelope Valley
(Los Angeles and Kern Counties)
- Ballona Wetlands (Los Angeles
County)
- Big Bear Lake
(San Bernardino County)
- Cajon
Pass
(San Bernardino County)
- Channel Islands
(Ventura County)
- Chino Hills
(Orange, Los Angeles, Riverside & San
Bernardino Counties)
- Coachella Valley (Riverside
County)
- Colorado River
(San Bernardino, Riverside & Imperial Counties,
Baja California & Sonora)
- Conejo Valley (Ventura
County)
- Cucamonga Valley (San
Bernardino County)
- Cuyamaca Mountains
(San Diego County)
- High Desert (Los Angeles, Kern,
& San Bernardino Counties)
- Imperial Fault (Imperial
County)
- Imperial Valley
(Imperial County)
- In-Ko-Pah Mountains
(San Diego County)
- Inland Empire
(Riverside, San Bernardino Counties)
- Jacumba Mountains
(San Diego County)
- La Jolla Cove (San Diego
County)
- Laguna Mountains
(San Diego County)
- Lake Arrowhead
(San Bernardino County)
- Lake Casitas
(Ventura County)
- Lake Castaic
(Los Angeles County)
- Lake
Piru
(Ventura County)
- Lakeview Mountains
(Riverside County)
- Los Angeles Basin (Los Angeles
County)
- Los Angeles River (Los Angeles
County)
- Low Desert (Imperial, Riverside &
San Bernardino Counties)
- Mojave Desert (Los Angeles, Kern
& San Bernardino Counties)
- Mugu Lagoon (Ventura County)
- New River (Imperial
County, Mexicali Municipality)
- Orange Coast (Orange County)
- Oxnard Plain (Ventura County)
- Palomar Mountain
(San Diego County)
- Palos Verdes Peninsula
(Los Angeles County)
- Peninsular Ranges (San Diego
County)
- Point
Loma
(San Diego County)
- Point Mugu
(Ventura County)
- Pomona Valley (Los Angeles and San
Bernardino Counties)
- Puente Hills
(Los Angeles County)
- Pyramid Lake
(Los Angeles County)
- Rio Hondo (Los Angeles
County)
- Saddleback Valley (Orange
County)
- Salton Sea
(Imperial & Riverside Counties)
- San Andreas Fault
(All Counties)
- San Bernardino Mountains
(San Bernardino County)
- San Bernardino Valley
(San Bernardino County)
- San Diego Bay
(San Diego County)
- San Diego River (San Diego
County)
- San Fernando Valley
(Los Angeles County)
- San Gabriel Mountains
(Los Angeles and San Bernardino
Counties)
- San Gabriel River (Los Angeles
County)
- San Gabriel Valley (Los
Angeles County)
- San Jacinto Mountains
(Riverside County)
- San Luis Rey River (San Diego
County)
- San Pedro Bay (Los
Angeles County)
- Santa Ana Mountains (Los
Angeles, Riverside & Orange Counties)
- Santa Ana River (San Bernardino,
Los Angeles & Orange County)
- Santa Ana Valley (Orange
County)
- 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
(Los Angeles & Ventura
Counties)
- Santa Susana Mountains
(Los Angeles & Ventura Counties)
- Sonoran Desert
(San Diego County, Arizona, Mexicali
Municipality)
- Sweetwater River
(San Diego County)
- Tijuana River
(San Diego County)
- Ventura River (Ventura
County)
- Victor Valley (San Bernardino
County)
Earthquakes
Each
year the southern California area has
about 10,000
earthquakes. Nearly all of
them are so small that they are not felt. Only several hundred are
greater than
magnitude 3.0, and only about
15-20 are greater than magnitude 4.0.
The Great Southern California ShakeOut
The
Great Southern California
ShakeOut is based on a potential magnitude
7.8 earthquake on the
southern San Andreas Fault— approximately 5,000 times larger than
the magnitude 5.4 earthquake that shook southern California on July
29, 2008.
Transportation
One of the large LAX signs that greet visitors to LAX.
This sign is at the Century Boulevard entrance to Los Angeles
International Airport
Airports
The following airports currently have regularly scheduled
commercial service:
Major Central business districts
The following are major
central business districts in
Southern California:
Transport
Freeways
Interstate
Highways
U.S.
Highway system
California State
Routes
- Note: highway segments with names listed in italics are
surface streets and not freeways.
Railroad
Major public transit organizations
Metrolink commuter lines
Communication
Telephone area codes

Map of major area codes in the Los
Angeles region, San Diego and the Inland Empire (San
Bernardino-Riverside) are their own separate regions
- 213 - Downtown
Los Angeles
- originally covered all of Southern
California
- 323 -
Doughnut-shaped area surrounding downtown, including Hollywood
, Mid-Wilshire, East Los Angeles
- 310 - West Los Angeles, Santa
Monica
, South Bay,
Catalina Island
- 424 - Overlay with 310
- 562
- Long
Beach
, southeastern Los
Angeles County
- 619
- San Diego
including downtown, East County and the South Bay
- 626 - Pasadena
, San Gabriel
Valley
- 657 - Overlay with 714
- 661 - Bakersfield
, Santa Clarita
, Antelope Valley
- 714 - Santa
Ana
, Anaheim
, northern Orange County
- 760
- Oceanside
, Escondido
, Palm Springs
, El Centro
, Victorville
, Barstow
, Ridgecrest
, Hesperia
, Apple Valley
, Adelanto
- 805 - Santa
Barbara
, Ventura
and San Luis Obispo
Counties
- 818 - San
Fernando Valley
, Glendale
- 858 - Northern
San
Diego
(including La
Jolla
) and its suburbs (including Del
Mar
and Poway
)
- 909 - Greater
San Bernardino Area
(Including: Downtown
San Bernardino
, Pomona
, Ontario
, and Big Bear
)
- 949 - Southern
Orange
County
(Irvine
, Newport Beach
, Laguna Niguel
& San Clemente
)
- 951 - Riverside
, Temecula
, western Riverside
County
Universities
- California
Institute of Technology

- California Institute of the
Arts

- California State Polytechnic University,
Pomona

- California State University, Channel
Islands

- California State University, Dominguez
Hills

- California State University,
Fullerton

- California State University, Long
Beach

- California State University, Los
Angeles

- California State University,
Northridge

- California State University, San
Bernardino

- California State University, San
Marcos

- California Polytechnic State
University

- Chapman University
- La Sierra University
- Loma Linda University

- Loyola Marymount University
, Los Angeles
- Pepperdine University

- Point Loma Nazarene College

- San Diego State University

- University of California at
Irvine

- University of California at Los
Angeles

- University of California at
Riverside

- University of California at San
Diego

- University
of California at Santa Barbara
- University of La
Verne
- University of Redlands

- University of San
Diego
- University
of Southern California

Colleges
Law Schools
Medical Schools
Graphic Design Schools
Beauty Schools
Dental Schools
Art Schools
Sports teams
See also
References
- The three metropolitan areas are: 1) Los
Angeles–Long Beach–Santa Ana (the second largest in the
US), 2) Riverside–San Bernardino–Ontario (the
Inland Empire) and 3) San
Diego–Carlsbad–San Marcos - see: United States metropolitan
areas
-
http://www.csac.counties.org/images/users/1/2008population.pdf
- Sector 9 Incorporated - San Diego, CA
- Surfline - Huntington Beach, CA
- X Games Take a Turn for the Better - Los Angeles
Times
- California's Coastal Mountains
- Revisions to the California State Implementation
Plan, San Joaquin Valley Unified Air Pollution Control
District
External links