The West Coast of the United States, also known as the Pacific Coast, Pacific states, and the western seaboard, is the
coastline along which the
Western United States
The Western United States (also called the American West, the Far West, and the West) is the region comprising the westernmost states of the United States. As American settlement in the U.S. expanded westward, the meaning of the term ''the Wes ...
meets the
North Pacific Ocean. The term typically refers to the
contiguous U.S. states 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 ...
,
Oregon
Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idah ...
, and
Washington, but sometimes includes
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...
and
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only ...
, especially by 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
An economy is an area of th ...
as a U.S. geographic division.
Definition
There are conflicting definitions of which states comprise the West Coast of the United States, but the West Coast always includes
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 ...
,
Oregon
Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idah ...
, and
Washington as part of that definition. Under most circumstances, however, the term encompasses the three contiguous states and
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...
, as they are all located in North America. For census purposes,
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only ...
is part of the West Coast, along with the other four states.
''
Encyclopædia Britannica
The ( Latin for "British Encyclopædia") is a general knowledge English-language encyclopaedia. It is published by Encyclopædia Britannica, Inc.; the company has existed since the 18th century, although it has changed ownership various ...
'' refers to the North American region as part of the Pacific Coast, including Alaska and
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include ...
. Although the encyclopedia acknowledges the inclusion of Hawaii in some capacity as part of the region, the editors wrote that "it has little in common geologically with the mainland states."
Several dictionaries offer different definitions of the West Coast.
Lexico
Lexico was a dictionary website that provided a collection of English and Spanish dictionaries produced by Oxford University Press (OUP), the publishing house of the University of Oxford. While the dictionary content on Lexico came from OUP, th ...
restricts the West Coast's definition to "the western seaboard of the U.S. from Washington to California."
However,
Macmillan Dictionary provides a less specific definition as "the western coast of the U.S., along the Pacific Ocean."
As for the
Cambridge Dictionary, the West Coast is "the area of the Pacific coast in the U.S. that includes California."
History
The
history of the West Coast begins with the arrival of the earliest known humans of the Americas,
Paleo-Indians, crossing the
Bering Strait from
Eurasia
Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelag ...
into North America over a land bridge,
Beringia, that existed between 45,000 BCE and 12,000 BCE (47,000–14,000 years ago). Small isolated groups of
hunter-gatherers migrated alongside herds of large
herbivores far into
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...
. Between 16,500 BCE and 13,500 BCE (18,500–15,500 years ago), ice-free corridors developed along the
Pacific coast
Pacific coast may be used to reference any coastline that borders the Pacific Ocean.
Geography Americas
Countries on the western side of the Americas have a Pacific coast as their western or southwestern border, except for Panama, where the P ...
and valleys of North America and possibly by sea.
Alaska Natives,
indigenous peoples of the Pacific Northwest Coast, and
California indigenous peoples eventually descended from the
Paleo-Indians. They developed various languages and established
trade routes.
Later, Spanish, British, French, Russian, and American explorers and settlers
began colonizing the area.

On May 10, 1869, the
first transcontinental railroad
North America's first transcontinental railroad (known originally as the "Pacific Railroad" and later as the " Overland Route") was a continuous railroad line constructed between 1863 and 1869 that connected the existing eastern U.S. rail netwo ...
was completed joining the West Coast to the East of the United States.
Climate
The West Coast of the United States has an
oceanic climate
An oceanic climate, also known as a marine climate, is the humid temperate climate sub-type in Köppen classification ''Cfb'', typical of west coasts in higher middle latitudes of continents, generally featuring cool summers and mild winters ...
in its Northwestern, Northern, and Eastern edge towards the U.S.-Canada border, but from Northern California, towards the U.S.-Mexico border the climate is
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 th ...
. While the northern half of the west coast, particularly coastal Washington and Oregon has moderate rainfall, particularly during the winter months, much of coastal California is drier year-round.
The coastline sees significantly milder temperatures compared to inland areas during summer. In far Northern California there is a difference of 17 °C (30 °F) between
Eureka and
Willow Creek in spite of only 25 miles (40 km) separating the locations and Willow Creek being located at a elevation. Slightly narrower fluctuations can be seen all through the coastline, and could partially be explained by the cold currents in the Pacific Ocean moderating coastal temperatures and the mountain ranges blocking the maritime air from moving farther inland than its foothills during summer.
Coastal fog is also prevalent in keeping shoreline temperatures cool. While famous in the
San Francisco Bay Area
The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Gov ...
, coastal fog also affects
Santa Monica
Santa Monica (; Spanish: ''Santa Mónica'') is a city in Los Angeles County, situated along Santa Monica Bay on California's South Coast. Santa Monica's 2020 U.S. Census population was 93,076. Santa Monica is a popular resort town, owing to ...
in
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 wor ...
,
Southern California
Southern California (commonly shortened to SoCal) is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban ...
, leading to May gray and
June gloom conditions. Coastal California has very little yearly temperature differences with cool summers similar to those expected in parts of
Northern Europe in San Francisco but warmer temperatures year-round further south. A short journey inland and summer temperatures are comparable with the rest of the United States on the same latitudes, sometimes warmer due to prevailing winds from the
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
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a U.S. state, state in the Southwestern United States. It is the list of U.S. states and territories by area, 6th largest and the list of U.S. states and territories by population, 14 ...
hot desert climate. Humidity is far lower on the west coast compared to the eastern seaboard and thunderstorms are uncommon.
Government and politics
With the exception of
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...
, the
Democratic Party Democratic Party most often refers to:
*Democratic Party (United States)
Democratic Party and similar terms may also refer to:
Active parties Africa
*Botswana Democratic Party
*Democratic Party of Equatorial Guinea
*Gabonese Democratic Party
*Demo ...
has dominated West Coast politics in contemporary history, with the states consistently voting for Democrats in elections at various levels. Four out of five West Coast states have voted for Democrats in presidential elections since
1992, three of which have done so since
1988.
State governments
Ideology and party strength
In politics, the West Coast usually refers to the contiguous coastal states of California, Oregon, and Washington because of their similar political leanings. In 2017, ''
The Oregonian
''The Oregonian'' is a daily newspaper based in Portland, Oregon, United States, owned by Advance Publications. It is the oldest continuously published newspaper on the U.S. west coast, founded as a weekly by Thomas J. Dryer on December 4, 18 ...
'' columnist
David Sarasohn
David Sarasohn (born August 17, 1950) is a columnist and managing editor for '' The Oregonian'' newspaper in Portland, Oregon. Prior to joining ''The Oregonian'', Sarasohn was a writer with '' Oregon magazine'' and a professor of history at R ...
described the West Coast as a "
blue wall" of shared values on
immigration
Immigration is the international movement of people to a destination country of which they are not natives or where they do not possess citizenship in order to settle as permanent residents or naturalized citizens. Commuters, tourists, a ...
,
abortion
Abortion is the termination of a pregnancy by removal or expulsion of an embryo or fetus. An abortion that occurs without intervention is known as a miscarriage or "spontaneous abortion"; these occur in approximately 30% to 40% of pregn ...
,
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 ...
, and
civil liberties.
By 2016, the West Coast states
legalized marijuana after California
voted
Voting is a method by which a group, such as a meeting or an electorate, can engage for the purpose of making a collective decision or expressing an opinion usually following discussions, debates or election campaigns. Democracies elect hold ...
to do so.
According to a 2019
Pew Research Center poll, 72% of adults in Pacific states said that "climate change is affecting their local community at least some", higher than in any other region in the country.
Since
1992, the three states have voted for
Democrats in presidential elections without interruption, but Oregon and Washington also voted for the Democratic presidential candidate in
1988.
Although the three states have reliably voted Democratic, no Democratic presidential candidate from any of the three states has won their party's nomination as of 2020.

In the 2010s, Democrats strengthened their political power along the West Coast. After winning a
special election
A by-election, also known as a special election in the United States and the Philippines, a bye-election in Ireland, a bypoll in India, or a Zimni election (Urdu: ضمنی انتخاب, supplementary election) in Pakistan, is an election used to f ...
for a seat in the Washington state senate in 2017, Democrats built a
government trifecta in all three West Coast states.
After the
2018 U.S. House of Representatives elections, Democrats controlled all West Coast congressional districts except
Washington's 3rd, represented by a
Republican.
Hawaii is not usually considered part of the West Coast in the political definition, it has been a Democratic stronghold. Before achieving statehood in 1959, Hawaii became a state favorable to Democrats to the point that they sought statehood for the territory.
Southern Democrats opposed the move because it would mean additional votes against their region on several issues.
Since achieving statehood, Hawaii consistently voted for Democrats in presidential elections, except in
1972 and
1984.
In
2016, the
Democratic Party Democratic Party most often refers to:
*Democratic Party (United States)
Democratic Party and similar terms may also refer to:
Active parties Africa
*Botswana Democratic Party
*Democratic Party of Equatorial Guinea
*Gabonese Democratic Party
*Demo ...
unseated the
lone Republican in the Hawaii Senate and controlled all seats in the state's upper house, which had not occurred anywhere in the country since 1980.
Dissimilar to the rest of the West Coast, Alaska has been a reliable state for Republicans in presidential elections. Since achieving statehood, Alaska has voted for the Democratic presidential candidate only once in
1964. In
1960, the state narrowly voted for Republican
Richard Nixon
Richard Milhous Nixon (January 9, 1913April 22, 1994) was the 37th president of the United States, serving from 1969 to 1974. A member of the Republican Party, he previously served as a representative and senator from California and was t ...
over Democrat
John F. Kennedy and had voted for Republicans uninterrupted since
1968
The year was highlighted by Protests of 1968, protests and other unrests that occurred worldwide.
Events January–February
* January 5 – "Prague Spring": Alexander Dubček is chosen as leader of the Communist Party of Czechos ...
.
Presidential election history
*Bold denotes election winner
Demographics

According to the results of the 2020 United States Census, 16 of the 20 largest cities on the West Coast exist in California.
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 wor ...
,
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
San Jose, all among the top 10 most populous cities in the country, lead the West Coast in population with more than a million people in each city, with Los Angeles being nearly three times the size of San Diego's population. Behind these three cities,
San Francisco
San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...
,
Seattle
Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...
and
Portland
Portland most commonly refers to:
* Portland, Oregon, the largest city in the state of Oregon, in the Pacific Northwest region of the United States
* Portland, Maine, the largest city in the state of Maine, in the New England region of the northeas ...
are respectively fourth, fifth and sixth in population. Hawaii's capital and largest city,
Honolulu
Honolulu (; ) is the capital and largest city of the U.S. state of Hawaii, which is in the Pacific Ocean. It is an unincorporated county seat of the consolidated City and County of Honolulu, situated along the southeast coast of the islan ...
, is the 13th largest city, and Alaska's largest city,
Anchorage
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring ...
, is 17th on the West Coast.
Culture
Since the West Coast has been populated by immigrants and their descendants more recently than the East Coast, its culture is considerably younger. Additionally, its demographic composition underlies its cultural difference from the rest of the United States. California's history first as a major Spanish colony, and later Mexican territory, has given the lower West Coast a distinctive Hispanic American tone, which it also shares with the rest of the Southwest. Similarly, two of the three cities in which Asian Americans have concentrated, San Francisco and Los Angeles, are located on the West Coast, with significant populations in other West Coast cities. San Francisco's
Chinatown, the oldest in North America, is a noted cultural center.
The West Coast also has a proportionally large share of
green cities within the United States, which manifests itself in different cultural practices such as bicycling and organic gardening.
In the
Pacific Northwest
The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though ...
, Portland and Seattle are both considered among the coffee capitals of the world. While
Starbucks
Starbucks Corporation is an American multinational chain of coffeehouses and roastery reserves headquartered in Seattle, Washington. It is the world's largest coffeehouse chain.
As of November 2021, the company had 33,833 stores in 80 ...
originated in Seattle, both cities are known for small-scale coffee roasters and independent coffeeshops. The culture has also been significantly shaped by the environment, especially by its forests, mountains, and rain. This may account for the fact that the Northwest has many high-quality libraries and bookshops (most notably
Powell's Books and the
Seattle Central Library) and a "bibliophile soul". The region also has a marginal, but growing independence movement based on
bioregionalism and a
Cascadian identity.
The
Cascadian flag has become a popular image at
Seattle Sounders FC and
Portland Timbers
The Portland Timbers are an American professional men's soccer club based in Portland, Oregon. The Timbers compete in Major League Soccer (MLS) as a member club of the league's Western Conference. The Timbers have played their home games at ...
games.
Alaska is widely known for its outdoors and its inhabitants engage in a range of activities that are unique to the state. Some of these activities can be experienced through the state's annual events, such as the
Iron Dog snowmobile race from
Anchorage
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring ...
to
Nome and on to
Fairbanks. Other events include the
World Ice Art Championships (Fairbanks) and the Sitka Whalefest (
Sitka).
Transportation

The ''
Coast Starlight'' is the main interstate passenger railroad route provided by
Amtrak
The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada ...
along the coast. Interstate railroad tracks in the Western United States are provided by
Union Pacific Railroad
The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pac ...
. Interstate travel is also served by roads such as the
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 Calif ...
freeway, the main high-speed north-south route along the West Coast.
Interstate 5 follows the coast only as far north as
Dana Point, California, before turning inland for much of its route. The main coastal scenic route throughout most of California is
California State Route 1. From the end of SR 1 at
Leggett, California,
U.S. Route 101 serves as the main scenic route along the coast in far Northern California, Oregon, and Washington State.
Sierra High Route is a popular trekking route.
Several of the most important
international airport
An international airport is an airport with customs and border control facilities enabling passengers to travel between countries around the world. International airports are usually larger than domestic airports and they must feature longer ...
s in the United States are located along the West Coast, including
Seattle–Tacoma International Airport,
San Francisco International Airport, and
Los Angeles International Airport
Los Angeles International Airport , commonly referred to as LAX (with each letter pronounced individually), is the primary international airport serving Los Angeles, California and its surrounding metropolitan area. LAX is located in the W ...
. Seattle, San Francisco, and Los Angeles all connect numerous destinations around the Pacific Ocean to points throughout North America, and are often described as gateways to the
Pacific Rim
The Pacific Rim comprises the lands around the rim of the Pacific Ocean. The '' Pacific Basin'' includes the Pacific Rim and the islands in the Pacific Ocean. The Pacific Rim roughly overlaps with the geologic Pacific Ring of Fire.
List of ...
.
See also
*
British Columbia Coast
, settlement_type = Region of British Columbia
, image_skyline =
, nickname = "The Coast"
, subdivision_type = Country
, subdivision_name = Canada
, subdivision_type1 = Province
, subdivision_name1 = British ...
*
East Coast of the United States
The East Coast of the United States, also known as the Eastern Seaboard, the Atlantic Coast, and the Atlantic Seaboard, is the coastline along which the Eastern United States meets the North Atlantic Ocean. The eastern seaboard contains the ...
*
East Coast–West Coast hip hop rivalry
*
Gulf Coast of the United States
*
Pacific Coast of Mexico
*
Southern California Bight
The Southern California Bight is a 692-kilometer-long (430 mi) stretch of curved coastline that runs along the west coast of the United States and Mexico, from Point Conception in California to Punta Colonet in Baja California, plus the area o ...
*
Sun Belt
*
Third Coast
Notes
References
{{Authority control
Census regions of the United States
Coasts of the Pacific Ocean
West
West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth.
Etymology
The word "west" is a Germanic word passed into some ...
Landforms of Alaska
Landforms of California
Landforms of Hawaii
Landforms of Oregon
Landforms of Washington (state)
Regions of the Western United States
Regions of the United States
Western United States