British Columbia is the westernmost province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, forests, lakes, mountains, inland deserts, and grassy plains. British Columbia borders the province of Alberta to the east; the territories of Yukon and Northwest Territories to the north; the US states of Washington, Idaho, and Montana to the south; and Alaska to the northwest. With an estimated population of 5.68 million as of 2025, it is Canada's third-most populous province. The capital of British Columbia is Victoria, while the province's largest city is Vancouver. Vancouver and its suburbs together make up the third-largest metropolitan area in Canada, with the 2021 census recording 2.6 million people in Metro Vancouver. British Columbia is Canada's third-largest province by total area, after Quebec and Ontario.
The first known human inhabitants of the area settled in British Columbia at least 10,000 years ago. They include the Coast Salish, Tsilhqotʼin, and Haida peoples, among many others. One of the earliest British settlements in the area was Fort Victoria, established in 1843, which gave rise to the city of Victoria, the capital of the Colony of Vancouver Island. The Colony of British Columbia (1858–1866) was subsequently founded by Richard Clement Moody, and by the Royal Engineers, Columbia Detachment, in response to the Fraser Canyon Gold Rush. Moody selected the site for and founded the mainland colony's capital New Westminster. The colonies of Vancouver Island and British Columbia were incorporated in 1866, after which Victoria became the united colony's capital. In 1871, British Columbia entered Confederation as the sixth province of Canada, in enactment of the British Columbia Terms of Union.
British Columbia is a diverse and cosmopolitan province, drawing on a plethora of cultural influences from its diasporas of British, European, and Asian Canadians, as well as the Indigenous population. Though the province's ethnic majority originates from the British Isles, many British Columbians also trace their ancestors to continental Europe, East Asia, and South Asia. Indigenous Canadians constitute about 6 percent of the province's total population. Christianity is the largest religion in the region, though the majority of the population is non-religious. English is the common language of the province, although Punjabi, Mandarin Chinese, and Cantonese also have a large presence in the Metro Vancouver region. The Franco-Columbian community is an officially recognized linguistic minority, and around one percent of British Columbians claim French as their mother tongue. British Columbia is home to at least 34 distinct Indigenous languages.
Major sectors of British Columbia's economy include forestry, mining, filmmaking and video production, tourism, real estate, construction, wholesale, and retail. Its main exports include lumber and timber, pulp and paper products, copper, coal, and natural gas. British Columbia exhibits high property values and is a significant centre for maritime trade: the Port of Vancouver is the largest port in Canada and the most diversified port in North America. Although less than 5 percent of British Columbia is arable land, significant agriculture exists in the Fraser Valley and Okanagan due to the warmer climate. British Columbia is home to 45% of all publicly listed companies in Canada.
The name of the province was chosen by Queen Victoria, when the Colony of British Columbia (1858–1866), i.e., "the Mainland", became a British colony in 1858. It refers to the Columbia District, the British name for the territory drained by the Columbia River, in southeastern British Columbia, which was the namesake of the Columbia Department of the Hudson's Bay Company. Queen Victoria chose British Columbia to distinguish what was the British sector of the Columbia District from the United States' ("American Columbia" or "Southern Columbia"), which became the Oregon Territory on August 8, 1848, as a result of the treaty.
Ultimately, the Columbia in the name British Columbia is derived from the name of the Columbia Rediviva, an American ship which lent its name to the Columbia River and later the wider region; the Columbia in the name Columbia Rediviva came from the name Columbia for the New World or parts thereof, a reference to Christopher Columbus.
The governments of Canada and British Columbia recognize Colombie-Britannique as the French name for the province.
British Columbia is bordered to the west by the Pacific Ocean and the American state of Alaska, to the north by Yukon and the Northwest Territories, to the east by the province of Alberta, and to the south by the American states of Washington, Idaho, and Montana. The southern border of British Columbia was established by the 1846 Oregon Treaty, although its history is tied with lands as far south as California. British Columbia's land area is 944,735 square kilometres (364,764 sq mi). British Columbia's rugged coastline stretches for more than 27,000 kilometres (17,000 mi), and includes deep, mountainous fjords and about 6,000 islands, most of which are uninhabited. It is the only province in Canada that borders the Pacific Ocean. British Columbia's highest mountain is Mount Fairweather; the highest mountain entirely within the province is Mount Waddington. British Columbia is considered to be part of the Pacific Northwest and the Cascadia bioregion, along with the American states of Alaska, Idaho, (western) Montana, Oregon, Washington, and (northern) California.
British Columbia's capital city, Victoria, is located on the southeastern tip of Vancouver Island. Only a narrow strip of Vancouver Island, from Campbell River to Victoria, is significantly populated. Much of the western part of Vancouver Island and the rest of the coast is covered by temperate rainforest. The province's most populous city, Vancouver, sits at the confluence of the Fraser River and Georgia Strait in the southwest corner of the mainland, an area commonly known as the Lower Mainland. By land area, Abbotsford is the province's largest city. Vanderhoof is near the geographic centre of the province. The northern, mostly mountainous, two-thirds of the province is largely unpopulated and undeveloped, except for the area east of the Rockies, where the Peace River Country contains BC's portion of the Canadian Prairies, centred at the city of Dawson Creek.
The Coast Mountains and the Inside Passage's many inlets provide some of British Columbia's renowned and spectacular scenery, which forms the backdrop and context for a growing outdoor adventure and ecotourism industry. 75 percent of the province is mountainous (more than 1,000 m [3,300 ft] above sea level); 60 percent is forested; and only about 5 percent is arable.
The province's mainland away from the coastal regions is somewhat moderated by the Pacific Ocean. Terrain ranges from dry inland forests and semi-arid valleys, to the range and canyon districts of the Central and Southern Interior, to boreal forest and subarctic prairie in the Northern Interior. High mountain regions both north and south have subalpine flora and subalpine climate.
The Okanagan wine area, extending from Vernon to Osoyoos at the Oroville–Osoyoos Border Crossing, is one of several wine and cider-producing regions in Canada. Other wine regions in British Columbia include the Cowichan Valley on Vancouver Island and the Fraser Valley.
The Southern Interior cities of Kamloops and Penticton have some of the warmest and longest summer climates in Canada (while higher elevations are cold and snowy), although their temperatures are often exceeded north of the Fraser Canyon, close to the confluence of the Fraser and Thompson rivers, where the terrain is rugged and covered with desert-type flora. Semi-desert grassland is found in large areas of the Interior Plateau, with land uses ranging from ranching at lower altitudes to forestry at higher ones.