West Coast (U.S.)

West Coast (U.S.)
Name	West Coast (U.S.)
Settlement type	Coastal region
Coordinates	36°N 120°W
Country	United States
States	California, Oregon, Washington
Largest city	Los Angeles
Population	50+ million (est.)
Area km2	880000

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West Coast (U.S.) The West Coast of the United States is the Pacific-facing coastal region encompassing California, Oregon, and Washington. It includes major metropolitan areas such as Los Angeles, San Francisco, Seattle, and San Diego and features landmark sites like Yosemite National Park, Redwood National and State Parks, and Crater Lake National Park. The region is a nexus for Silicon Valley, Hollywood, Port of Los Angeles, and Port of Seattle, shaping national trends in technology, entertainment, maritime trade, and environmental policy.

Definition and Geography

Indigenous histories are represented by nations such as the Yurok, Hupa, Pomo, Miwok, Ohlone, Chumash, Tongva, Coast Salish, Makah, and Tlingit, with archaeological sites like Morrow Point and cultural centers preserving traditions tied to salmon runs and canoe travel. European contact began with expeditions including Juan Rodríguez Cabrillo, Sir Francis Drake, and Mendocino-era explorers, followed by colonization efforts by Spain, Russia, and Great Britain; missions and presidios like those established by Junípero Serra transformed coastal California. The California Gold Rush triggered rapid population growth and municipal development in places such as San Francisco and Sacramento, while the Oregon Trail and treaties like the Treaty of Guadalupe Hidalgo shaped territorial boundaries. Twentieth-century developments included the rise of Hollywood, expansion of United States Navy bases, the growth of Boeing in Seattle, and the postwar emergence of Silicon Valley and the Dot-com bubble era.

The West Coast hosts diverse populations including communities of Latino Americans, Asian Americans, Filipino Americans, Japanese Americans, Chinese Americans, Korean Americans, Vietnamese Americans, and Indigenous peoples tied to tribes like the Snoqualmie and Yakama. Urban centers feature neighborhoods such as Chinatown, San Francisco, Little Saigon (San Jose), Little Tokyo (Los Angeles), and Capitol Hill (Seattle). Cultural institutions include the Los Angeles County Museum of Art, San Francisco Museum of Modern Art, Getty Center, Seattle Art Museum, Los Angeles Opera, and festivals like Coachella, Sundance Film Festival (satellite presence), and South by Southwest-adjacent West Coast showcases. Culinary scenes reflect influences from Mexican cuisine, Japanese cuisine, Chinese cuisine, Korean cuisine, and Filipino cuisine, with landmark markets such as the Ferry Building Marketplace and Pike Place Market. Sports franchises include the Los Angeles Lakers, San Francisco 49ers, Seattle Seahawks, Los Angeles Dodgers, and Golden State Warriors.

Climates range from Mediterranean in coastal California and parts of Oregon to temperate rainforest on the Olympic Peninsula and continental climates in interior valleys; ecosystems include coastal scrub, chaparral, redwood forests, oak woodlands, and alpine zones in Sierra Nevada and Cascade Range. Environmental challenges involve wildfire seasons intensified by factors studied by Intergovernmental Panel on Climate Change, droughts affecting the Sacramento–San Joaquin River Delta, salmon declines in the Columbia River caused in part by dams like Bonneville Dam, coastal erosion near Big Sur, and sea level rise impacting San Francisco Bay and Seattle Waterfront. Conservation and policy responses include actions by National Park Service, U.S. Fish and Wildlife Service, state agencies such as the California Air Resources Board, and NGOs like the Sierra Club, The Nature Conservancy, and Environmental Defense Fund.