Coordinates: 37°N 120°W / 37°N 120°W / 37; -120

California is a state in the Pacific Region of the United States. With 39.5 million residents across a total area of about 163,696 square miles (423,970 km²), California is the most populous U.S. state and the third-largest by area, and is also the world’s thirty-fourth most populous subnational entity. California is also the most populated subnational entity in North America, and has its state capital in Sacramento. The Greater Los Angeles Area and the San Francisco Bay Area are the nation’s second- and fifth-most populous urban regions, with 18.7 million and 9.7 million residents respectively. Los Angeles is California’s most populous city, and the country’s second-most populous, after New York City. California also has the nation’s most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The City and County of San Francisco is both the country’s second most densely populated major city after New York City and the fifth most densely populated county, behind only four of the five New York City boroughs.

California’s economy, with a gross state product of $3.0 trillion, is the largest sub-national economy in the world. If it were a country, California would be the fifth-largest economy in the world, and the 37th-most populous as of 2020. The Greater Los Angeles Area and the San Francisco Bay Area are the nation’s second- and third-largest urban economies ($1.3 trillion and $1.0 trillion respectively as of 2020), after the New York metropolitan area ($2.0 trillion). The San Francisco Bay Area PSA had the nation’s highest gross domestic product per capita in 2018 ($106,757) among large primary statistical areas, and is home to four of the world’s ten largest companies by market capitalization and four of the world’s ten richest people.

California culture is considered a global trendsetter in popular culture, communication, information, innovation, environmentalism, economics, politics, and entertainment. As a result of the state’s diversity and migration, California integrates foods, languages, and traditions from other areas across the country and around the globe. It is considered the origin of the American film industry, the hippie counterculture, barbecue, fast food, beach and car culture, the Internet, and the personal computer, among others. The San Francisco Bay Area and the Greater Los Angeles Area are widely seen as centers of the global technology and entertainment industries, respectively. California’s economy is very diverse: 58% of it is based on finance, government, real estate services, technology, and professional, scientific, and technical business services. Although it accounts for only 1.5% of the state’s economy, California’s agriculture industry has the highest output of any U.S. state.