Indigenous history The earliest
archeological evidence of
human habitation in the area dates to 3000 BCE. The
Ohlone name for San Francisco was
Ahwaste, meaning "place at the bay". The
Yelamu group of the
Ramaytush people lived in a few small villages when an overland
Spanish exploration party arrived on November 2, 1769, the first documented European visit to
San Francisco Bay. The arrival of Spanish colonists, and the establishment of the Mission system, marked the beginning of the assimilation of the Ramaytush people and the decline of their language and culture.
Spanish era (1769–1821) established the
Presidio of San Francisco for the
Spanish Empire in 1776. was founded by Padre
Francisco Palóu on October 9, 1776. The
Spanish Empire claimed San Francisco as part of
Las Californias, a province of the
Viceroyalty of New Spain. The Spanish first arrived in what is now San Francisco on November 2, 1769, when the
Portolá expedition, led by Don
Gaspar de Portolá and
Juan Crespí, arrived at
San Francisco Bay. Having noted the strategic benefits of the area due to its large natural harbor, the Spanish dispatched
Pedro Fages in 1770 to find a more direct route to the
San Francisco Peninsula from
Monterey, which would become part of the
El Camino Real route. In 1774,
Juan Bautista de Anza arrived in the area to select sites for a
mission and
presidio. The first European maritime presence in San Francisco Bay occurred on August 5, 1775, when the Spanish ship
San Carlos, commanded by
Juan Manuel de Ayala, became the first ship to anchor in the bay. Soon after, on March 28, 1776, Anza established the
Presidio of San Francisco and on October 9,
Mission San Francisco de Asís, also known as Mission Dolores, was founded by Padre
Francisco Palóu.
Mexican era (1821–1848) , known as the "Founding Mother of San Francisco" In 1821, Spain
ceded the
Californias to Mexico. The extensive
California mission system gradually lost its influence during the period of
Mexican rule, although it was not until 1833 that the missions would be secularized. Agricultural land became largely privatized as
ranchos, as was occurring in other parts of California. Coastal trade increased, including a half-dozen
barques from various Atlantic ports which regularly sailed in California waters. With the enactment of the
Mexican Secularization Act of 1833, the missions were required to divest themselves of their extensive landholdings and emancipate the indigenous people under their control. As part of the process of secularization, Governor
José Figueroa opened up San Francisco to civilian settlement. Prior to secularization, the only settlements in San Francisco had been the military settlement at the Presidio and the religious settlement at Mission Dolores. Mission Dolores sold most of its property in 1836, retaining only the church and related structures. In 1833,
Juana Briones de Miranda was granted a small
rancho at
El Polín Spring, near the Presidio, founding the first non-indigenous civilian household in San Francisco. A land survey of Yerba Buena was made by the Swiss immigrant
Jean Jacques Vioget as prelude to the city plan. Following the
Bear Flag Revolt in Sonoma and the beginning of the
U.S. Conquest of California, American forces from the
USS Portsmouth under the command of
John B. Montgomery captured Yerba Buena on July 9, 1846, with little resistance from the local Californio population, raising the American flag over Yerba Buena plaza (later renamed Portsmouth Square in commemoration of this event). Following the capture, U.S. forces appointed both
José de Jesús Noé and
Washington Allon Bartlett to serve as co-
alcaldes (mayors), while the conquest continued on in the rest of California. On January 30, 1847, Mayor Bartlett ordained that the city should officially change its name from "Yerba Buena" to "San Francisco", as the former name was only locally recognized and the latter name was in use on international maps. There was also concern that a new town being planned by General Vallejo on the
Carquinez Strait was to be called "Francisca", after the first name of his wife. After the name change to "San Francisco", the name of Vallejo's town was changed to
Benicia, after his wife's middle name. Following the
Treaty of Guadalupe Hidalgo in 1848,
Alta California was
ceded from Mexico to the United States.
Early American era (1848–1906) in 1851 Despite its attractive location as a port and naval base, San Francisco under American sovereignty was still a small settlement with inhospitable geography, lacking most of the basic facilities for a proper settlement. Its 1847 population was said to be 459. raising the population from 1,000 in 1848 to 25,000 by December 1849. The promise of wealth was so strong that crews on arriving vessels deserted and rushed off to the gold fields, leaving behind a forest of
masts in San Francisco harbor. Some of these approximately 500 abandoned ships were used at times as
storeships,
saloons, and hotels; many were left to rot, and some were sunk to establish title to the underwater lot. By 1851, the harbor was extended out into the bay by wharves while buildings were erected on piles among the ships. By 1870,
Yerba Buena Cove had been filled to create new land. Buried ships are occasionally exposed when foundations are dug for new buildings. California was quickly
granted statehood in 1850, and the
U.S. Army built
Fort Point at the
Golden Gate and a fort on
Alcatraz Island to secure the bay. San Francisco County was one of the state's 18 original counties established at California statehood in 1850. San Francisco's city limits originally extended west to
Divisadero Street and Castro Street, and south to 20th Street, but in 1856, the California state government divided the county. A straight line was then drawn across the tip of the San Francisco Peninsula just north of
San Bruno Mountain. Everything south of the line became the new San Mateo County, while everything north of the line became the new consolidated City and County of San Francisco. , established in 1864, was the first commercial bank in
Western United States. In addition to triggering a sharp growth in population, The California gold rush also triggered a wave of entrepreneurial activity as individuals sought to capitalize on the newfound wealth. The discovery of silver deposits, notably the
Comstock Lode in Nevada in 1859, further fueled rapid population growth and economic expansion. The influx of fortune seekers and surge in population also brought challenges, including heightened criminal activity and poverty. Lawlessness became rampant, and the
Barbary Coast district became synonymous with vice, attracting criminals, prostitutes, and illicit activities, including but not limited to prostitution,
bootlegging, and gambling. The rapidly growing population, with its lawlessness, gambling and other vices, and the fact that there were no churches to be found, prompted missionaries like
William Taylor to come to San Francisco where he began preaching in the streets, using an upright barrel as his pulpit. Taylor garnered enough generous donations from successful gold miners to build a church. One of the most influential figures of this era was
William Chapman Ralston. A shrewd banker and investor, Ralston amassed considerable wealth and influence in San Francisco. He gained control over a significant portion of the
Comstock Lode's gold and silver mines, establishing a virtual monopoly. Using his incredible clout, Ralston was able to generate millions of dollars for San Francisco during its heady boom years. He founded the
Bank of California, the first bank in the Western United States, and built the opulent Palace Hotel, a symbol of San Francisco's newfound prosperity and the largest hotel in the country at the time. His financial empire, however, collapsed in 1875 as a result of the
Panic of 1873, triggering a major economic crisis in San Francisco. '' (March 20, 1880) showing a
Workingmen's Party of California anti-Chinese rally on the sand lots near
San Francisco City Hall The resulting unemployment and poverty from the
Long Depression led to a rise in
anti-Chinese sentiment that culminated in the
San Francisco riot of 1877, in which a mob of the city's majority
Irish population descended on
Chinatown, killing four and causing $100,000 worth of property damage. These events gave rise to the
Workingmen's Party of California, led by
drayman Denis Kearney and mobilized by his slogan "The Chinese must go!" The party elected one third of delegates to
California's Second Constitutional Convention (the most of any organized party), This agitation paved the way for the
Chinese Exclusion Act of 1882, which prohibited all immigration of Chinese laborers to the United States until it was
repealed over 60 years later. Development of the
Port of San Francisco and the establishment in 1869 of overland access to the eastern U.S. rail system via the newly completed
Pacific Railroad (the construction of which the city only reluctantly helped support) helped make the Bay Area a center for trade. Catering to the needs and tastes of the growing population,
Levi Strauss opened a
dry goods business and
Domingo Ghirardelli began manufacturing chocolate. Chinese immigrants made the city a polyglot culture, drawn to "Old Gold Mountain", creating the city's
Chinatown quarter. By 1880, Chinese made up 9.3% of the population. The first
cable cars carried San Franciscans up
Clay Street in 1873. The city's sea of
Victorian houses began to take shape, and civic leaders campaigned for a spacious public park, resulting in plans for
Golden Gate Park. San Franciscans built schools, churches, theaters, and all the hallmarks of civic life. The
Presidio developed into the most important American military installation on the Pacific coast. In 1890, San Francisco's population approached 300,000, making it the
eighth-largest city in the United States at the time. Around 1901, San Francisco was a major city known for its flamboyant style, stately hotels, ostentatious mansions on
Nob Hill, and a thriving arts scene.In addition to the population boom, the first North American plague epidemic was the
San Francisco plague of 1900–1904.
Modern American era (1906–1940) was the
deadliest earthquake in U.S. history. At 5:12 am on April 18, 1906, a major
earthquake struck San Francisco and northern California. As buildings collapsed from the quake, ruptured
gas lines ignited fires that spread across the city and burned out of control for several days. With
water mains out of service, the
Presidio Artillery Corps attempted to contain the inferno by dynamiting entire city blocks to create firebreaks. After the flames died down, it was estimated that more than three-quarters of the city lay in ruins, including the entire downtown core. Contemporary accounts reported that 498 people died, though modern estimates put the number far higher in the several thousands. More than half of the city's population of 400,000 was left homeless.
Refugees settled temporarily in makeshift tent villages throughout the city, including in Golden Gate Park, the Presidio, and on the beaches.
Jack London is remembered for having famously eulogized the earthquake: "Not in history has a modern imperial city been so completely destroyed. San Francisco is gone." Rebuilding was rapid and performed on a grand scale. Rejecting calls to completely remake the street grid, San Franciscans opted for speed.
Amadeo Giannini's
Bank of Italy, later to become
Bank of America, provided loans for many of those whose livelihoods had been devastated. The influential
San Francisco Planning and Urban Research Association or SPUR was founded in 1910 to address the quality of housing after the earthquake. The earthquake hastened development of western neighborhoods that survived the fire, including
Pacific Heights, where many of the city's wealthy rebuilt their homes. In turn, the destroyed mansions of Nob Hill became grand hotels.
City Hall rose again in the
Beaux Arts style, and the city celebrated its rebirth at the
Panama–Pacific International Exposition in 1915. , a major
world's fair held in 1915, was seen as a chance to showcase the city's recovery from the earthquake. During this period, San Francisco built some of its most important infrastructure. Civil Engineer
Michael O'Shaughnessy was hired by San Francisco Mayor
James Rolph as chief engineer for the city in September 1912 to supervise the construction of the Twin Peaks Reservoir, the
Stockton Street Tunnel, the
Twin Peaks Tunnel, the
San Francisco Municipal Railway, the
Auxiliary Water Supply System, and new sewers. San Francisco's streetcar system was pushed to completion by O'Shaughnessy between 1915 and 1927. It was the
O'Shaughnessy Dam,
Hetch Hetchy Reservoir, and
Hetch Hetchy Aqueduct that would have the largest effect on San Francisco. An abundant water supply enabled San Francisco to develop into the city it has become today. under construction on
Yerba Buena Island in 1935 In ensuing years, the city solidified its standing as a financial capital; in the wake of the
1929 stock market crash, not a single San Francisco-based bank failed. It was at the height of the
Great Depression that San Francisco undertook two great civil engineering projects, simultaneously constructing the
San Francisco–Oakland Bay Bridge and the
Golden Gate Bridge, completing them in 1936 and 1937, respectively. It was in this period that the island of
Alcatraz, a former military stockade, began its service as a federal maximum security prison, housing notorious inmates such as
Al Capone and
Robert Franklin Stroud, the Birdman of Alcatraz. San Francisco later celebrated its regained grandeur with a
World's fair, the
Golden Gate International Exposition in 1939–40, creating
Treasure Island in the middle of the bay to house it.
Postmodern American era (1941–present) was created in San Francisco in 1945, when the
United Nations Charter was signed at the
San Francisco Conference. During
World War II,
Hunters Point Naval Shipyard became a hub of activity, and
Fort Mason became the primary port of embarkation for service members shipping out to the
Pacific Theater of Operations. the city-owned
Sharp Park in
Pacifica was also used as an
internment camp to detain
Japanese Americans.'''''' The explosion of jobs drew many people, especially
African Americans from the South, to the area. After the end of the war, many military personnel returning from service abroad and civilians who had originally come to work decided to stay. The
United Nations Charter creating the
United Nations was drafted and signed in San Francisco in 1945 and, in 1951, the
Treaty of San Francisco re-established peaceful relations between Japan and the
Allied Powers. Significant urban planning projects in the 1950s and 1960s involved widespread destruction and redevelopment of west-side neighborhoods and the construction of new
freeways, of which only a series of short segments were built before being halted by
citizen-led opposition. The onset of
containerization made San Francisco's small piers obsolete, and cargo activity moved to the larger
Port of Oakland. The city began to lose industrial jobs and turned to tourism as the most important segment of its economy. The suburbs experienced rapid growth, and San Francisco underwent significant demographic change, as large segments of the white population left the city, supplanted by an increasing wave of
immigration from Asia and Latin America. From 1950 to 1980, the city lost over 10 percent of its population. in 1967 was an influential
counterculture phenomenon with as many as 100,000 people converging in San Francisco's
Haight-Ashbury neighborhood. Over this period, San Francisco became a magnet for America's
counterculture movement.
Beat Generation writers fueled the
San Francisco Renaissance and centered on the
North Beach neighborhood in the 1950s.
Hippies flocked to
Haight-Ashbury in the 1960s, reaching a peak with the 1967
Summer of Love. In 1974, the
Zebra murders left at least 16 people dead. In the 1970s, the city became a center of the
gay rights movement, with the emergence of
The Castro as an urban
gay village, the election of
Harvey Milk to the
Board of Supervisors, and his
assassination, along with that of Mayor
George Moscone, in 1978.
Bank of America, now based in
Charlotte,
North Carolina, was founded in San Francisco; the bank completed
555 California Street in 1969. The
Transamerica Pyramid was completed in 1972, igniting a wave of "
Manhattanization" that lasted until the late 1980s, a period of extensive high-rise development downtown. The 1980s also saw a dramatic increase in the number of homeless people in the city, an issue that remains today, despite many attempts to address it. , built in 1972, characterized the
Manhattanization of the city's skyline in the 1970–80s. The
1989 Loma Prieta earthquake caused destruction and loss of life throughout the Bay Area. In San Francisco, the quake severely damaged structures in the
Marina and
South of Market districts and precipitated the demolition of the damaged
Embarcadero Freeway and much of the damaged
Central Freeway. The reconstruction allowed the city to reclaim
The Embarcadero as its historic downtown waterfront and revitalizing the
Hayes Valley neighborhood. The three recent decades have seen booms driven by the internet industry. During the
dot-com boom of the late 1990s,
startup companies invigorated the San Francisco economy. Large numbers of entrepreneurs and computer application developers moved into the city, followed by marketing, design, and sales professionals, changing the social landscape as once poorer neighborhoods became increasingly
gentrified. Demand for new housing and office space ignited a second wave of high-rise development, this time in the South of Market district. By 2000, the city's population reached new highs, surpassing the previous record set in 1950. When the bubble burst in 2001, many of these companies folded and their employees were laid off. Yet high technology and entrepreneurship remain mainstays of the San Francisco economy. By the mid-2000s (decade), the
social media boom had begun, with San Francisco becoming a popular location for tech offices and a common place to live for people employed in
Silicon Valley companies such as
Apple and
Google. The early 2020s saw a reduction of tech companies' presence in Downtown San Francisco in the wake of the
COVID-19 pandemic, increased popularity of working at home, and struggles with homelessness. Although some observers have raised the possibility that office vacancies and declining tax revenues could cause San Francisco to enter an economic
doom loop, other sources have refuted this broad-based characterization of the city as a whole, asserting that the issues of concern are restricted primarily to the urban core of San Francisco. The
San Francisco Armory,
Palace of Fine Arts,
Haas–Lilienthal House, and
450 Sutter Street are among the dozens of historical landmarks in the city
listed on the National Register of Historic Places. ==Geography==