San Francisco - wikipedia San Francisco This article is about the city and county in California. For other uses, see San Francisco ( disambiguation ). San Francisco, California Consolidated city - county City and County of San Francisco San Francisco and the Golden Gate Bridge from Marin Headlands Flag Seal Nickname ( s ) : See List of nicknames for San Francisco Motto : Oro en Paz, Fierro en Guerra ( Spanish ) ( English : `` Gold in Peace, Iron in War '' ) Location of San Francisco in California Coordinates : 37 ° 47 ′ N 122 ° 25 ′ W ﻿ / ﻿ 37.783 ° N 122.417 ° W ﻿ / 37.783 ; - 122.417 Coordinates : 37 ° 47 ′ N 122 ° 25 ′ W ﻿ / ﻿ 37.783 ° N 122.417 ° W ﻿ / 37.783 ; - 122.417 Country United States State California CSA San Jose -- San Francisco -- Oakland Metro San Francisco -- Oakland -- Hayward Mission June 29, 1776 Incorporated April 15, 1850 Founded by José Joaquin Moraga Francisco Palóu Named for St. Francis of Assisi Government Type Mayor - council Body Board of Supervisors Mayor Edwin M. Lee ( D ) Supervisors List Sandra Lee Fewer ( D ) Mark Farrell ( D ) Aaron Peskin ( D ) Katy Tang ( D ) London Breed ( D ) Jane Kim ( D ) Norman Yee ( D ) Jeff Sheehy ( D ) Hillary Ronen ( D ) Malia Cohen ( D ) Ahsha Safaí ( D ) Assembly members David Chiu ( D ) Phil Ting ( D ) State senator Scott Wiener ( D ) United States Representatives Nancy Pelosi ( D ) Jackie Speier ( D ) Area City and county 231.89 sq mi ( 600.59 km ) Land 46.89 sq mi ( 121.46 km ) Water 185.00 sq mi ( 479.14 km ) 80.00 % Metro 3,524.4 sq mi ( 9,128 km ) Elevation 52 ft ( 16 m ) Highest elevation 934 ft ( 285 m ) Lowest elevation 0 ft ( 0 m ) Population ( 2016 ) City and county 870,887 Estimate ( 2016 ) 870,887 Rank 13th, U.S. Density 18,573 / sq mi ( 7,170 / km ) Metro 4,679,166 ( 11th ) CSA 8,751,807 ( 5th ) Demonym ( s ) San Franciscan Time zone Pacific Time Zone ( UTC − 8 ) Summer ( DST ) Pacific Daylight Time ( UTC − 7 ) ZIP Codes 94102 -- 94105, 94107 -- 94112, 94114 -- 94134, 94137, 94139 -- 94147, 94151, 94158 -- 94161, 94163 -- 94164, 94172, 94177, 94188 Area codes 415 / 628 FIPS code 06 - 67000 GNIS feature IDs 277593, 2411786 Website www.sf.gov San Francisco ( initials SF ) ( / ˌsæn frənˈsɪskoʊ /, Spanish for Saint Francis ; Spanish : ( san franˈsisko ) ), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. The consolidated city - county covers an area of about 47.9 square miles ( 124 km ) at the north end of the San Francisco Peninsula in the San Francisco Bay Area. It is the fourth-most populous city in California, and the 13th-most populous in the United States, with a 2016 census - estimated population of 870,887. The population is projected to reach 1 million by 2033. San Francisco was founded on June 29, 1776, when colonists from Spain established Presidio of San Francisco at the Golden Gate and Mission San Francisco de Asís a few miles away, all named for St. Francis of Assisi. The California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city - county in 1856. After three - quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama - Pacific International Exposition nine years later. In World War II, San Francisco was a major port of embarkation for service members shipping out to the Pacific Theater. It then became the birthplace of the United Nations in 1945. After the war, the confluence of returning servicemen, massive immigration, liberalizing attitudes, along with the rise of the `` hippie '' counterculture, the Sexual Revolution, the Peace Movement growing from opposition to United States involvement in the Vietnam War, and other factors led to the Summer of Love and the gay rights movement, cementing San Francisco as a center of liberal activism in the United States. Politically, the city votes strongly along liberal Democratic Party lines. A popular tourist destination, San Francisco is known for its cool summers, fog, steep rolling hills, eclectic mix of architecture, and landmarks, including the Golden Gate Bridge, cable cars, the former Alcatraz Federal Penitentiary, Fisherman 's Wharf, and its Chinatown district. San Francisco is also the headquarters of five major banking institutions and various other companies such as Levi Strauss & Co., Gap Inc., Fitbit, Salesforce.com, Dropbox, Reddit, Square, Inc., Dolby, Airbnb, Weebly, Pacific Gas and Electric Company, Yelp, Pinterest, Twitter, Uber, Lyft, Mozilla, Wikimedia Foundation, Craigslist and Weather Underground. It is home to number of educational and cultural institutions, such as the University of California, San Francisco ( UCSF ), the De Young Museum, the San Francisco Museum of Modern Art, and the California Academy of Sciences. San Francisco has several nicknames, including `` The City by the Bay '', `` Golden Gate City '', `` Frisco '', `` SF '', `` San Fran '', `` Fog City '', and as well as older ones like `` The City that Knows How '', `` Baghdad by the Bay '', `` The Paris of the West '', or simply `` The City ''. As of 2017, San Francisco is ranked high on world liveability rankings. Contents 1 History 2 Geography 2.1 Cityscape 2.1. 1 Neighborhoods 2.2 Climate 3 Demographics 3.1 Race, ethnicity, religion and languages 3.2 Education, households, and income 3.2. 1 Homelessness 4 Economy 4.1 Tourism and conventions 5 Culture and contemporary life 5.1 LGBT 5.2 Entertainment and performing arts 5.3 Museums 6 Sports 7 Beaches and parks 8 Law and government 8.1 Crime 8.2 Gangs 8.3 Public safety 9 Education 9.1 Colleges and universities 9.2 Primary and secondary schools 9.3 Early education 10 Media 11 Transportation 11.1 Freeways and roads 11.2 Public transportation 11.3 Airports 11.4 Cycling and walking 12 Notable people 13 Consulates and sister cities 13.1 Sister Cities 14 See also 15 Notes 16 References 17 Bibliography 18 Further reading 19 External links History See also : History of San Francisco and Timeline of San Francisco Historical affiliations Spanish Empire 1776 -- 1821 First Mexican Empire 1821 -- 1823 United Mexican States 1823 -- 1848 United States 1848 -- present Mission San Francisco de Asís ( Mission Dolores ) The earliest archaeological evidence of human habitation of the territory of the city of San Francisco dates to 3000 BC. The Yelamu group of the Ohlone people resided in a few small villages when an overland Spanish exploration party, led by Don Gaspar de Portolà, arrived on November 2, 1769, the first documented European visit to San Francisco Bay. Seven years later, on March 28, 1776, the Spanish established the Presidio of San Francisco, followed by a mission, Mission San Francisco de Asís ( Mission Dolores ), established by the Spanish explorer Juan Bautista de Anza. View of San Francisco 1846 -- 47 1853 United States Coast Survey Map Upon independence from Spain in 1821, the area became part of Mexico. Under Mexican rule, the mission system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, near a boat anchorage around what is today Portsmouth Square. Together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7, 1846, during the Mexican -- American War, and Captain John B. Montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, and Mexico officially ceded the territory to the United States at the end of the war. Despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography. Francis Samuel Marryat, Hilltop of San Francisco, California, Looking toward the Bay, 1849. M. & N. Hanhart Chromolithograph Port of San Francisco in 1851 The California Gold Rush brought a flood of treasure seekers ( known as `` forty - niners '', as in `` 1849 '' ). With their sourdough bread in tow, prospectors accumulated in San Francisco over rival Benicia, raising the population from 1,000 in 1848 to 25,000 by December 1849. The promise of fabulous riches 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. military built Fort Point at the Golden Gate and a fort on Alcatraz Island to secure the San Francisco Bay. Silver discoveries, including the Comstock Lode in Nevada in 1859, further drove rapid population growth. With hordes of fortune seekers streaming through the city, lawlessness was common, and the Barbary Coast section of town gained notoriety as a haven for criminals, prostitution, and gambling. Entrepreneurs sought to capitalize on the wealth generated by the Gold Rush. Early winners were the banking industry, with the founding of Wells Fargo in 1852 and the Bank of California in 1864. 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. Immigrant laborers made the city a polyglot culture, with Chinese Railroad Workers, drawn to `` Old Gold Mountain '', creating the city 's Chinatown quarter. In 1870, Asians made up 8 % 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. By 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. The first North American plague epidemic was the San Francisco plague of 1900 -- 1904. At 5 : 12 am on April 18, 1906, a major earthquake struck San Francisco and northern California. As buildings collapsed from the shaking, 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 blocks of buildings to create firebreaks. More than three - quarters of the city lay in ruins, including almost all of the downtown core. Contemporary accounts reported that 498 people lost their lives, though modern estimates put the number 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 in Golden Gate Park, the Presidio, on the beaches, and elsewhere. Many fled permanently to the East Bay. `` Not in history has a modern imperial city been so completely destroyed. San Francisco is gone. '' -- Jack London after the 1906 earthquake and fire The Palace of Fine Arts at the 1915 Panama - Pacific Exposition 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 splendid Beaux Arts style, and the city celebrated its rebirth at the Panama - Pacific International Exposition in 1915. It was 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, of which the J, K, L, M, and N lines survive today, 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. The Bay Bridge, under construction in 1935, took forty months to complete. 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. Indeed, 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. The USS San Francisco steams under the Golden Gate Bridge in 1942, during World War II. During World War II, the 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 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 officially ended the war with Japan. 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. Over this period, San Francisco became a magnet for America 's counterculture. 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 completed 555 California Street in 1969 and 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. 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, allowing the city to reclaim The Embarcadero as its historic downtown waterfront and revitalizing the Hayes Valley neighborhood. Two recent decades have seen two booms driven by the internet industry. First was 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 popular place to live for people employed in Silicon Valley companies such as Apple and Google. The Ferry Station Post Office Building, Armour & Co. Building, Atherton House, and YMCA Hotel are historic buildings among dozens of historical landmarks in the city according to the National Register of Historic Places listings in San Francisco. Geography The San Francisco Peninsula San Francisco is located on the West Coast of the United States at the north end of the San Francisco Peninsula and includes significant stretches of the Pacific Ocean and San Francisco Bay within its boundaries. Several picturesque islands -- Alcatraz, Treasure Island and the adjacent Yerba Buena Island, and small portions of Alameda Island, Red Rock Island, and Angel Island -- are part of the city. Also included are the uninhabited Farallon Islands, 27 miles ( 43 km ) offshore in the Pacific Ocean. The mainland within the city limits roughly forms a `` seven - by - seven - mile square '', a common local colloquialism referring to the city 's shape, though its total area, including water, is nearly 232 square miles ( 600 km ). Cars navigate Lombard Street to descend Russian Hill. There are more than 50 hills within city limits. Some neighborhoods are named after the hill on which they are situated, including Nob Hill, Potrero Hill, and Russian Hill. Near the geographic center of the city, southwest of the downtown area, are a series of less densely populated hills. Twin Peaks, a pair of hills forming one of the city 's highest points, forms a popular overlook spot. San Francisco 's tallest hill, Mount Davidson, is 928 feet ( 283 m ) high and is capped with a 103 - foot ( 31 m ) tall cross built in 1934. Dominating this area is Sutro Tower, a large red and white radio and television transmission tower. The nearby San Andreas and Hayward Faults are responsible for much earthquake activity, although neither physically passes through the city itself. The San Andreas Fault caused the earthquakes in 1906 and 1989. Minor earthquakes occur on a regular basis. The threat of major earthquakes plays a large role in the city 's infrastructure development. The city constructed an auxiliary water supply system and has repeatedly upgraded its building codes, requiring retrofits for older buildings and higher engineering standards for new construction. However, there are still thousands of smaller buildings that remain vulnerable to quake damage. USGS has released the California earthquake forecast which models earthquake occurrence in California. San Francisco 's shoreline has grown beyond its natural limits. Entire neighborhoods such as the Marina, Mission Bay, and Hunters Point, as well as large sections of the Embarcadero, sit on areas of landfill. Treasure Island was constructed from material dredged from the bay as well as material resulting from tunneling through Yerba Buena Island during the construction of the Bay Bridge. Such land tends to be unstable during earthquakes. The resulting soil liquefaction causes extensive damage to property built upon it, as was evidenced in the Marina district during the 1989 Loma Prieta earthquake. Most of the city 's natural watercourses, such as Islais Creek and Mission Creek, have been culverted and built over, although the Public Utilities Commission is studying proposals to daylight or restore some creeks. Cityscape Main article : List of Landmarks and Historic Places in San Francisco Downtown San Francisco, seen from Twin Peaks, in October 2006. Downtown San Francisco, seen from Twin Peaks at dusk, in December 2009. Neighborhoods San Francisco 's Chinatown is the oldest and one of the largest in North America. Main article : Neighborhoods in San Francisco See also : List of tallest buildings in San Francisco The historic center of San Francisco is the northeast quadrant of the city anchored by Market Street and the waterfront. It is here that the Financial District is centered, with Union Square, the principal shopping and hotel district, and the Tenderloin nearby. Cable cars carry riders up steep inclines to the summit of Nob Hill, once the home of the city 's business tycoons, and down to the waterfront tourist attractions of Fisherman 's Wharf, and Pier 39, where many restaurants feature Dungeness crab from a still - active fishing industry. Also in this quadrant are Russian Hill, a residential neighborhood with the famously crooked Lombard Street ; North Beach, the city 's Little Italy and the former center of the Beat Generation ; and Telegraph Hill, which features Coit Tower. Abutting Russian Hill and North Beach is San Francisco 's Chinatown, the oldest Chinatown in North America. The South of Market, which was once San Francisco 's industrial core, has seen significant redevelopment following the construction of AT&T Park and an infusion of startup companies. New skyscrapers, live - work lofts, and condominiums dot the area. Further development is taking place just to the south in Mission Bay area, a former railroad yard, which now has a second campus of the University of California, San Francisco, and where the new Warriors arena will be built. West of downtown, across Van Ness Avenue, lies the large Western Addition neighborhood, which became established with a large African American population after World War II. The Western Addition is usually divided into smaller neighborhoods including Hayes Valley, the Fillmore, and Japantown, which was once the largest Japantown in North America but suffered when its Japanese American residents were forcibly removed and interned during World War II. The Western Addition survived the 1906 earthquake with its Victorians largely intact, including the famous `` Painted Ladies '', standing alongside Alamo Square. To the south, near the geographic center of the city is Haight - Ashbury, famously associated with 1960s hippie culture. The Haight is now home to some expensive boutiques and a few controversial chain stores, although it still retains some bohemian character. Skyscrapers are common in northeast San Francisco, the city 's downtown North of the Western Addition is Pacific Heights, an affluent neighborhood that features the homes built by wealthy San Franciscans in the wake of the 1906 earthquake. Directly north of Pacific Heights facing the waterfront is the Marina, a neighborhood popular with young professionals that was largely built on reclaimed land from the Bay. The Transamerica Pyramid was the tallest building in San Francisco until 2016, when Salesforce Tower surpassed it In the south - east quadrant of the city is the Mission District -- populated in the 19th century by Californios and working - class immigrants from Germany, Ireland, Italy, and Scandinavia. In the 1910s, a wave of Central American immigrants settled in the Mission and, in the 1950s, immigrants from Mexico began to predominate. In recent years, gentrification has changed the demographics of parts of the Mission from Latino, to twenty - something professionals. Noe Valley to the southwest and Bernal Heights to the south are both increasingly popular among young families with children. East of the Mission is the Potrero Hill neighborhood, a mostly residential neighborhood that features sweeping views of downtown San Francisco. West of the Mission, the area historically known as Eureka Valley, now popularly called the Castro, was once a working - class Scandinavian and Irish area. It has become North America 's first and best known gay village, and is now the center of gay life in the city. Located near the city 's southern border, the Excelsior District is one of the most ethnically diverse neighborhoods in San Francisco. The predominantly African American Bayview - Hunters Point in the far southeast corner of the city is one of the poorest neighborhoods and suffers from a high rate of crime, though the area has been the focus of several revitalizing and controversial urban renewal projects. The construction of the Twin Peaks Tunnel in 1918 connected southwest neighborhoods to downtown via streetcar, hastening the development of West Portal, and nearby affluent Forest Hill and St. Francis Wood. Further west, stretching all the way to the Pacific Ocean and north to Golden Gate Park lies the vast Sunset District, a large middle class area with a predominantly Asian population. The northwestern quadrant of the city contains the Richmond, also a mostly middle - class neighborhood north of Golden Gate Park, home to immigrants from other parts of Asia as well as many Russian and Ukrainian immigrants. Together, these areas are known as The Avenues. These two districts are each sometimes further divided into two regions : the Outer Richmond and Outer Sunset can refer to the more western portions of their respective district and the Inner Richmond and Inner Sunset can refer to the more eastern portions. Many piers remained derelict for years until the demolition of the Embarcadero Freeway reopened the downtown waterfront, allowing for redevelopment. The centerpiece of the port, the Ferry Building, while still receiving commuter ferry traffic, has been restored and redeveloped as a gourmet marketplace. Climate San Francisco has a warm - summer Mediterranean climate ( Köppen Csb ) characteristic of California 's coast, with moist mild winters and dry summers. San Francisco 's weather is strongly influenced by the cool currents of the Pacific Ocean on the west side of the city, and the water of San Francisco Bay to the north and east. This moderates temperature swings and produces a remarkably mild year - round climate with little seasonal temperature variation. Fog is a regular feature of San Francisco summers. Among major U.S. cities, San Francisco has the coolest daily mean, maximum, and minimum temperatures for June, July, and August. During the summer, rising hot air in California 's interior valleys creates a low pressure area that draws winds from the North Pacific High through the Golden Gate, which creates the city 's characteristic cool winds and fog. The fog is less pronounced in eastern neighborhoods and during the late summer and early fall. As a result, the year 's warmest month, on average, is September, and on average, October is warmer than July, especially in daytime. Because of its sharp topography and maritime influences, San Francisco exhibits a multitude of distinct microclimates. The high hills in the geographic center of the city are responsible for a 20 % variance in annual rainfall between different parts of the city. They also protect neighborhoods directly to their east from the foggy and sometimes very cold and windy conditions experienced in the Sunset District ; for those who live on the eastern side of the city, San Francisco is sunnier, with an average of 260 clear days, and only 105 cloudy days per year. Temperatures reach or exceed 80 ° F ( 27 ° C ) on an average of only 21 and 23 days a year at downtown and San Francisco International Airport ( SFO ), respectively. The dry period of May to October is mild to warm, with the normal monthly mean temperature peaking in September at 62.7 ° F ( 17.1 ° C ). The rainy period of November to April is slightly cooler, with the normal monthly mean temperature reaching its lowest in January at 51.3 ° F ( 10.7 ° C ). On average, there are 73 rainy days a year, and annual precipitation averages 23.65 inches ( 601 mm ). Variation in precipitation from year to year is high. Above average rain years are often associated with warm El Niño conditions in the Pacific while dry years often occur in cold water La Niña periods. In 2013 ( a `` La Niña '' year ), a record low 5.59 in ( 142 mm ) of rainfall was recorded at downtown San Francisco, where records have been kept since 1849. Snowfall in the city is very rare, with only 10 measurable accumulations recorded since 1852, most recently in 1976 when up to 5 inches ( 130 mm ) fell on Twin Peaks. The highest recorded temperature at the official National Weather Service office was 106 ° F ( 41 ° C ) on September 1, 2017. The lowest recorded temperature was 27 ° F ( − 3 ° C ) on December 11, 1932. The National Weather Service provides a helpful visual aid graphing the information in the table below to display visually by month the annual typical temperatures, the past year 's temperatures, and record temperatures. San Francisco falls under the USDA 10a Plant Hardiness zone. Climate data for San Francisco ( downtown ), 1981 -- 2010 normals, extremes 1849 -- present Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high ° F ( ° C ) 79 ( 26 ) 81 ( 27 ) 87 ( 31 ) 94 ( 34 ) 97 ( 36 ) 103 ( 39 ) 98 ( 37 ) 98 ( 37 ) 106 ( 41 ) 102 ( 39 ) 86 ( 30 ) 76 ( 24 ) 106 ( 41 ) Mean maximum ° F ( ° C ) 67.3 ( 19.6 ) 72.5 ( 22.5 ) 75.7 ( 24.3 ) 82.3 ( 27.9 ) 82.7 ( 28.2 ) 86.0 ( 30 ) 83.1 ( 28.4 ) 85.5 ( 29.7 ) 89.6 ( 32 ) 88.1 ( 31.2 ) 76.1 ( 24.5 ) 66.4 ( 19.1 ) 94.3 ( 34.6 ) Average high ° F ( ° C ) 56.9 ( 13.8 ) 60.2 ( 15.7 ) 61.8 ( 16.6 ) 63.1 ( 17.3 ) 64.3 ( 17.9 ) 66.4 ( 19.1 ) 66.5 ( 19.2 ) 68.1 ( 20.1 ) 70.2 ( 21.2 ) 69.2 ( 20.7 ) 63.1 ( 17.3 ) 57.1 ( 13.9 ) 63.9 ( 17.7 ) Daily mean ° F ( ° C ) 51.3 ( 10.7 ) 53.9 ( 12.2 ) 55.1 ( 12.8 ) 56.2 ( 13.4 ) 57.6 ( 14.2 ) 59.6 ( 15.3 ) 60.3 ( 15.7 ) 61.6 ( 16.4 ) 62.7 ( 17.1 ) 61.5 ( 16.4 ) 56.6 ( 13.7 ) 51.6 ( 10.9 ) 57.3 ( 14.1 ) Average low ° F ( ° C ) 45.7 ( 7.6 ) 47.5 ( 8.6 ) 48.5 ( 9.2 ) 49.2 ( 9.6 ) 51.0 ( 10.6 ) 52.8 ( 11.6 ) 54.1 ( 12.3 ) 55.1 ( 12.8 ) 55.1 ( 12.8 ) 53.7 ( 12.1 ) 50.1 ( 10.1 ) 46.1 ( 7.8 ) 50.7 ( 10.4 ) Mean minimum ° F ( ° C ) 40.3 ( 4.6 ) 41.8 ( 5.4 ) 43.6 ( 6.4 ) 45.1 ( 7.3 ) 47.7 ( 8.7 ) 50.2 ( 10.1 ) 51.5 ( 10.8 ) 52.6 ( 11.4 ) 52.0 ( 11.1 ) 49.6 ( 9.8 ) 44.2 ( 6.8 ) 40.1 ( 4.5 ) 38.2 ( 3.4 ) Record low ° F ( ° C ) 29 ( − 2 ) 31 ( − 1 ) 33 ( 1 ) 40 ( 4 ) 42 ( 6 ) 46 ( 8 ) 47 ( 8 ) 46 ( 8 ) 47 ( 8 ) 43 ( 6 ) 38 ( 3 ) 27 ( − 3 ) 27 ( − 3 ) Average rainfall inches ( mm ) 4.50 ( 114.3 ) 4.46 ( 113.3 ) 3.26 ( 82.8 ) 1.46 ( 37.1 ) 0.70 ( 17.8 ) 0.16 ( 4.1 ) 0.00 ( 0 ) 0.06 ( 1.5 ) 0.21 ( 5.3 ) 1.12 ( 28.4 ) 3.16 ( 80.3 ) 4.56 ( 115.8 ) 23.65 ( 600.7 ) Average rainy days ( ≥ 0.01 in ) 11.7 11.1 11.0 6.5 3.8 1.5 0.3 1.0 1.7 3.9 8.9 11.6 73.0 Average relative humidity ( % ) 80 77 75 72 72 71 75 75 73 71 75 78 74.5 Mean monthly sunshine hours 185.9 207.7 269.1 309.3 325.1 311.4 313.3 287.4 271.4 247.1 173.4 160.6 3,061.7 Percent possible sunshine 61 69 73 78 74 70 70 68 73 71 57 54 69 Source # 1 : NOAA ( sun 1961 -- 1974 ) Source # 2 : Met Office for humidity Demographics Main article : Demographics of San Francisco Historical population Year Pop. ± % 1848 1,000 -- 1849 25,000 + 2400.0 % 1852 34,776 + 39.1 % 1860 56,802 + 63.3 % 1870 149,473 + 163.1 % 1880 233,959 + 56.5 % 1890 298,997 + 27.8 % 1900 342,782 + 14.6 % 1910 416,912 + 21.6 % 1920 506,676 + 21.5 % 1930 634,394 + 25.2 % 1940 634,536 + 0.0 % 1950 775,357 + 22.2 % 1960 740,316 − 4.5 % 1970 715,674 − 3.3 % 1980 678,974 − 5.1 % 1990 723,959 + 6.6 % 2000 776,733 + 7.3 % 805,235 + 3.7 % 2016 870,887 + 8.2 % Sources : See also : Population Graph Source : U.S. Decennial Census The U.S. Census Bureau estimates San Francisco 's population to be 870,887 as of July 1, 2016, with a population density of 18,573 / sq mi. San Francisco is the second-most densely populated major American city behind only New York ( among cities greater than 200,000 population ), and the fifth-most densely populated U.S. county. San Francisco is the traditional focal point of the San Francisco Bay Area and forms part of the five - county San Francisco -- Oakland -- Hayward, CA Metropolitan Statistical Area, a region of 4.6 million people. It is also part of the greater 12 - county San Jose - San Francisco - Oakland, CA Combined Statistical Area, whose population is over 8.7 million, making it the fifth - largest in the United States as of July 1, 2015. Race, ethnicity, religion and languages San Francisco has a minority - majority population, as non-Hispanic whites comprise less than half of the population, 41.9 %, down from 92.5 % in 1940. As of the 2010 census, the ethnic makeup and population of San Francisco included : 390,387 whites ( 48 % ), 267,915 Asians ( 33 % ), 48,870 African Americans ( 6 % ), and others. There were 121,744 Hispanics or Latinos of any race ( 15 % ). In 2010, residents of Chinese ethnicity constituted the largest single ethnic minority group in San Francisco at 21 % of the population ; the other Asian groups are Filipinos ( 5 % ) and Vietnamese ( 2 % ). The population of Chinese ancestry is most heavily concentrated in Chinatown, Sunset District, and Richmond District, whereas Filipinos are most concentrated in the Crocker - Amazon ( which is contiguous with the Filipino community of Daly City, which has one of the highest concentrations of Filipinos in North America ), as well as in SoMa. The Tenderloin District is home to a large portion of the city 's Vietnamese population as well as businesses and restaurants, which is known as the city 's Little Saigon. The principal Hispanic groups in the city were those of Mexican ( 7 % ) and Salvadoran ( 2 % ) ancestry. The Hispanic population is most heavily concentrated in the Mission District, Tenderloin District, and Excelsior District. The city 's percentage of Hispanic residents is less than half of that of the state. San Francisco 's African American population has declined to 6 % of the city 's population. The percentage of African Americans in San Francisco is similar to that of California. The majority of the city 's black population reside within the neighborhoods of Bayview - Hunters Point, Visitacion Valley, and in the Fillmore District. Map of racial distribution in San Francisco Bay Area, 2010 U.S. Census. Each dot is 25 people : White, Black, Asian Hispanic, or Other ( yellow ) Demographic profile 2000 1990 1970 1940 White 48.5 % 49.7 % 53.6 % 71.4 % 95.0 % Non-Hispanic White 41.9 % 43.6 % 46.6 % 60.4 % 92.5 % Asian 33.3 % 30.8 % 29.1 % 13.3 % 4.2 % Black or African American 6.1 % 7.8 % 10.9 % 13.4 % 0.8 % American Indian and Alaska Native 0.5 % 0.4 % 0.5 % 0.4 % -- Native Hawaiian and Other Pacific Islander 0.4 % 0.5 % 0.5 % -- -- Some other race 6.6 % 6.5 % 5.9 % 1.5 % - Two or more races 4.7 % 4.0 % - - - Hispanic or Latino ( of any race ) 15.1 % 14.1 % 13.9 % 11.6 % 2.5 % Source : US Census According to a 2014 study by the Pew Research Center, the largest religious groupings in San Francisco 's metropolitan area are Christians ( 48 % ), followed by those of no religion ( 35 % ), Hindus ( 5 % ), Jews ( 3 % ), Buddhists ( 2 % ), Muslims ( 1 % ) and a variety of other religions have smaller followings. According to the same study by the Pew Research Center, about 20 % of residents in the area are Protestant, and 25 % professing Roman Catholic beliefs. Meanwhile, 10 % of the residents in metropolitan San Francisco identifies as agnostics, while 5 % identifies as atheists. As of 2010, 55 % ( 411,728 ) of San Francisco residents spoke English at home as a primary language, while 19 % ( 140,302 ) spoke a variety of Chinese ( mostly Taishanese and Cantonese ), 12 % ( 88,147 ) Spanish, 3 % ( 25,767 ) Tagalog, and 2 % ( 14,017 ) Russian. In total, 45 % ( 342,693 ) of San Francisco 's population spoke a mother language other than English. Education, households, and income Of all major cities in the United States, San Francisco has the second - highest percentage of residents with a college degree, behind only Seattle. Over 44 % of adults have a bachelor 's or higher degree. San Francisco had the highest rate at 7,031 per square mile, or over 344,000 total graduates in the city 's 46.7 square miles ( 121 km ). San Francisco has the highest percentage of gay and lesbian individuals of any of the 50 largest U.S. cities, at 15 %. San Francisco also has the highest percentage of same - sex households of any American county, with the Bay Area having a higher concentration than any other metropolitan area. Income in 2011 Per capita income $46,777 Median household income $72,947 Median family income $87,329 San Francisco ranks third of American cities in median household income with a 2007 value of $65,519. Median family income is $81,136. An emigration of middle - class families has left the city with a lower proportion of children, 15 %, than any other large American city. The city 's poverty rate is 12 %, lower than the national average. Homelessness has been a chronic problem for San Francisco since the early 1970s. The city is believed to have the highest number of homeless inhabitants per capita of any major U.S. city. There are 345,811 households in the city, out of which : 133,366 households ( 39 % ) were individuals, 109,437 ( 32 % ) were opposite - sex married couples, 63,577 ( 18 % ) had children under the age of 18 living in them, 21,677 ( 6 % ) were unmarried opposite - sex partnerships, and 10,384 ( 3 % ) were same - sex married couples or partnerships. The average household size was 2.26 ; the average family size was 3.11. 452,986 people ( 56 % ) lived in rental housing units, and 327,985 people ( 41 % ) lived in owner - occupied housing units. The median age of the city population is 38 years. Homelessness Homelessness, historically, has been a major problem in the city and remains a growing problem in modern times. The homeless population is estimated to be 13,500 with 6,500 living on the streets. Economy See also : List of companies based in San Francisco San Francisco has a diversified service economy, with employment spread across a wide range of professional services, including financial services, tourism, and ( increasingly ) high technology. In 2012, approximately 25 % of workers were employed in professional business services ; 16 % in government services ; 15 % in leisure and hospitality ; 11 % in education and health care ; and 9 % in financial activities. In 2015, GDP in the five - county San Francisco metropolitan area was $431.7 billion. Additionally, in 2015 the San Jose - San Francisco - Oakland combined statistical area had a GDP of $758.5 billion, ranking 3rd among CSA s, and ahead of all but 16 countries. San Francisco 's per capita personal income in 2015 was $117,680 adjusted for inflation, ranking 12th among 3,007 U.S. Counties. California Street in the Financial District The legacy of the California Gold Rush turned San Francisco into the principal banking and finance center of the West Coast in the early twentieth century. Montgomery Street in the Financial District became known as the `` Wall Street of the West '', home to the Federal Reserve Bank of San Francisco, the Wells Fargo corporate headquarters, and the site of the now - defunct Pacific Coast Stock Exchange. Bank of America, a pioneer in making banking services accessible to the middle class, was founded in San Francisco and in the 1960s, built the landmark modern skyscraper at 555 California Street for its corporate headquarters. Many large financial institutions, multinational banks, and venture capital firms are based in or have regional headquarters in the city. With over 30 international financial institutions, six Fortune 500 companies, and a large support infrastructure of professional services -- including law, public relations, architecture and design -- San Francisco is designated as an Alpha ( - ) World City. The 2017 Global Financial Centres Index ranked San Francisco as the sixth most competitive financial center in the world. Alcatraz receives 1.5 million annual visitors. Since the 1990s, San Francisco 's economy has diversified away from finance and tourism towards the growing fields of high tech, biotechnology, and medical research. Technology jobs accounted for just 1 percent of San Francisco 's economy in 1990, growing to 4 percent in 2010 and an estimated 8 percent by the end of 2013. San Francisco became an epicenter of Internet start - up companies during the dot - com bubble of the 1990s and the subsequent social media boom of the late 2000s ( decade ). Since 2010, San Francisco proper has attracted an increasing share of venture capital investments as compared to nearby Silicon Valley, attracting 423 financings worth US $4.58 billion in 2013. In 2004, the city approved a payroll tax exemption for biotechnology companies to foster growth in the Mission Bay neighborhood, site of a second campus and hospital of the University of California, San Francisco ( UCSF ). Mission Bay hosts the UCSF Medical Center, the California Institute for Regenerative Medicine, California Institute for Quantitative Biosciences, and Gladstone Institutes, as well as more than 40 private - sector life sciences companies. Ships docked at Pier 3, with Financial District skyscrapers in the background. The top employer in the city is the city government itself, employing 5.3 % ( 25,000 + people ) of the city 's population, followed by UCSF with over 22,000 employees. Third -- at 1.8 % ( 8,500 + people ) -- is California Pacific Medical Center, the largest private - sector employer. Small businesses with fewer than 10 employees and self - employed firms make up 85 % of city establishments, and the number of San Franciscans employed by firms of more than 1,000 employees has fallen by half since 1977. The growth of national big box and formula retail chains into the city has been made intentionally difficult by political and civic consensus. In an effort to buoy small privately owned businesses in San Francisco and preserve the unique retail personality of the city, the Small Business Commission started a publicity campaign in 2004 to keep a larger share of retail dollars in the local economy, and the Board of Supervisors has used the planning code to limit the neighborhoods where formula retail establishments can set up shop, an effort affirmed by San Francisco voters. However, by 2016, San Francisco was rated low by small businesses in a Business Friendliness Survey. Like many U.S. cities, San Francisco once had a significant manufacturing sector employing nearly 60,000 workers in 1969, but nearly all production left for cheaper locations by the 1980s. As of 2014, San Francisco has seen a small resurgence in manufacturing, with more than 4,000 manufacturing jobs across 500 companies, doubling since 2011. The city 's largest manufacturing employer is Anchor Brewing Company, and the largest by revenue is Timbuk2. Tourism and conventions See also : Port of San Francisco Tourism is one of the city 's largest private - sector industries, accounting for more than one out of seven jobs in the city. The city 's frequent portrayal in music, film, and popular culture has made the city and its landmarks recognizable worldwide. It attracts the fifth - highest number of foreign tourists of any city in the United States and is one of the 100 most visited cities worldwide. More than 18 million visitors arrived in San Francisco in 2014, adding US $10.67 billion to the economy. With a large hotel infrastructure and a world - class convention facility in the Moscone Center, San Francisco is a popular destination for annual conventions and conferences. Some of the most popular tourist attractions in San Francisco noted by the Travel Channel include the Golden Gate Bridge and Alamo Square Park, which is home to the famous `` Painted Ladies ''. Both of these locations were often used as landscape shots for the hit American sitcom Full House. There is also Lombard Street, known for its `` crookedness '' and beautiful views. Tourists also flood to Pier 39, which offers dining, shopping, entertainment, and beautiful views of the bay, sun - bathing seals, and the famous Alcatraz Island. San Francisco also offers tourists cultural and unique nightlife in its neighborhoods. The Ferry Building along the Embarcadero The new Terminal Project at Pier 27 opened September 25, 2014 as a replacement for the old Pier 35. Itineraries from San Francisco usually include round trip cruises to Alaska and Mexico. A heightened interest in conventioneering in San Francisco, marked by the establishment of convention centers such as Yerba Buena, acted as a feeder into the local tourist economy and resulted in an increase in the hotel industry : `` In 1959, the city had fewer than thirty - three hundred first - class hotel rooms ; by 1970, the number was nine thousand ; and by 1999, there were more than thirty thousand. '' The commodification of the Castro District has contributed to San Francisco 's tourist economy. Culture and contemporary life Main article : Culture of San Francisco See also : San Francisco in popular culture Boutiques along Fillmore Street in Pacific Heights Although the Financial District, Union Square, and Fisherman 's Wharf are well - known around the world, San Francisco is also characterized by its numerous culturally rich streetscapes featuring mixed - use neighborhoods anchored around central commercial corridors to which residents and visitors alike can walk. Because of these characteristics, San Francisco is ranked the second `` most walkable '' city in the United States by Walkscore.com. Many neighborhoods feature a mix of businesses, restaurants and venues that cater to both the daily needs of local residents while also serving many visitors and tourists. Some neighborhoods are dotted with boutiques, cafés and nightlife such as Union Street in Cow Hollow, 24th Street in Noe Valley, Valencia Street in the Mission, Grant Avenue in North Beach, and Irving Street in the Inner Sunset. This approach especially has influenced the continuing South of Market neighborhood redevelopment with businesses and neighborhood services rising alongside high - rise residences. High - rises surround Yerba Buena Gardens, South of Market Since the 1990s, the demand for skilled information technology workers from local startups and nearby Silicon Valley has attracted white - collar workers from all over the world and created a high standard of living in San Francisco. Many neighborhoods that were once blue - collar, middle, and lower class have been gentrifying, as many of the city 's traditional business and industrial districts have experienced a renaissance driven by the redevelopment of the Embarcadero, including the neighborhoods South Beach and Mission Bay. The city 's property values and household income have risen to among the highest in the nation, creating a large and upscale restaurant, retail, and entertainment scene. According to a 2014 quality of life survey of global cities, San Francisco has the highest quality of living of any U.S. city. However, due to the exceptionally high cost of living, many of the city 's middle and lower - class families have been leaving the city for the outer suburbs of the Bay Area, or for California 's Central Valley. By June 2, 2015, the median rent was reported to be as high as $4,225. The high cost of living is due in part to restrictive planning laws which limit new residential construction. The international character that San Francisco has enjoyed since its founding is continued today by large numbers of immigrants from Asia and Latin America. With 39 % of its residents born overseas, San Francisco has numerous neighborhoods filled with businesses and civic institutions catering to new arrivals. In particular, the arrival of many ethnic Chinese, which accelerated beginning in the 1970s, has complemented the long - established community historically based in Chinatown throughout the city and has transformed the annual Chinese New Year Parade into the largest event of its kind outside China. With the arrival of the `` beat '' writers and artists of the 1950s and societal changes culminating in the Summer of Love in the Haight - Ashbury district during the 1960s, San Francisco became a center of liberal activism and of the counterculture that arose at that time. The Democrats and to a lesser extent the Green Party have dominated city politics since the late 1970s, after the last serious Republican challenger for city office lost the 1975 mayoral election by a narrow margin. San Francisco has not voted more than 20 % for a Republican presidential or senatorial candidate since 1988. In 2007, the city expanded its Medicaid and other indigent medical programs into the `` Healthy San Francisco '' program, which subsidizes certain medical services for eligible residents. San Francisco also has had a very active environmental community. Starting with the founding of the Sierra Club in 1892 to the establishment of the non-profit Friends of the Urban Forest in 1981, San Francisco has been at the forefront of many global discussions regarding our natural environment. The 1980 San Francisco Recycling Program was one of the earliest curbside recycling programs. The city 's GoSolarSF incentive promotes solar installations and the San Francisco Public Utilities Commission is rolling out the CleanPowerSF program to sell electricity from local renewable sources. SF Greasecycle is a program to recycle used cooking oil for conversion to biodiesel. The Sunset Reservoir Solar Project, completed in 2010, installed 24,000 solar panels on the roof of the reservoir. The 5 - megawatt plant more than tripled the city 's 2 - megawatt solar generation capacity when it opened in December 2010. LGBT Main article : LGBT culture in San Francisco The rainbow flag, symbol of LGBT pride, originated in San Francisco ; banners like this one decorate streets in The Castro. San Francisco has long had an LGBT - friendly history. It was home to the first lesbian - rights organization in the United States, Daughters of Bilitis ; the first openly gay person to run for public office in the United States, José Sarria ; the first openly gay man to be elected to public office in California, Harvey Milk ; the first openly lesbian judge appointed in the U.S., Mary C. Morgan ; and the first transgender police commissioner, Theresa Sparks. The city 's large gay population has created and sustained a politically and culturally active community over many decades, developing a powerful presence in San Francisco 's civic life. Survey data released in 2015 by Gallup place the proportion of the San Francisco metro area at 6.2 %, which is the highest such proportion observed of the 50 most populous metropolitan areas as measured by the polling organization. One of the most popular destinations for gay tourists internationally, the city hosts San Francisco Pride, one of the largest and oldest pride parades. San Francisco Pride events have been held continuously since 1972. The events are themed and a new theme is created each year. In 2013, over 1.5 million people attended, around 500,000 more than the previous year. Entertainment and performing Arts Main article : List of theatres in San Francisco The lobby of the War Memorial Opera House, one of the last buildings erected in Beaux Arts style in the United States San Francisco 's War Memorial and Performing Arts Center hosts some of the most enduring performing - arts companies in the country. The War Memorial Opera House houses the San Francisco Opera, the second - largest opera company in North America as well as the San Francisco Ballet, while the San Francisco Symphony plays in Davies Symphony Hall. The Fillmore is a music venue located in the Western Addition. It is the second incarnation of the historic venue that gained fame in the 1960s, housing the stage where now - famous musicians such as the Grateful Dead, Janis Joplin, Led Zeppelin and Jefferson Airplane first performed, fostering the San Francisco Sound. San Francisco has a large number of theaters and live performance venues. Local theater companies have been noted for risk taking and innovation. The Tony Award - winning non-profit American Conservatory Theater ( A.C.T. ) is a member of the national League of Resident Theatres. Other local winners of the Regional Theatre Tony Award include the San Francisco Mime Troupe. San Francisco theaters frequently host pre-Broadway engagements and tryout runs, and some original San Francisco productions have later moved to Broadway. Museums Main article : List of museums in San Francisco Bay Area, California § San Francisco The San Francisco Museum of Modern Art ( SFMOMA ) houses 20th century and contemporary works of art. It moved to its current building in the South of Market neighborhood in 1995 and attracted more than 600,000 visitors annually. SFMOMA closed for renovation and expansion in 2013. The museum reopened on May 14, 2016 with an addition, designed by Snøhetta, that has doubled the museum 's size. The Palace of the Legion of Honor holds primarily European antiquities and works of art at its Lincoln Park building modeled after its Parisian namesake. The de Young Museum in Golden Gate Park features American decorative pieces and anthropological holdings from Africa, Oceania and the Americas, while Asian art is housed in the Asian Art Museum. Opposite the de Young stands the California Academy of Sciences, a natural history museum that also hosts the Morrison Planetarium and Steinhart Aquarium. Located on Pier 15 on the Embarcadero, the Exploratorium is an interactive science museum. The Contemporary Jewish Museum is a non-collecting institution that hosts a broad array of temporary exhibitions. On Nob Hill, the Cable Car Museum is a working museum featuring the cable car power house, which drives the cables. Sports AT&T Park opened in 2000. Main article : Sports in the San Francisco Bay Area Major League Baseball 's San Francisco Giants have played in San Francisco since moving from New York in 1958. The Giants play at AT&T Park, which opened in 2000. The Giants won World Series titles in 2010, 2012, and in 2014. The Giants have boasted such stars as Willie Mays, Willie McCovey and Barry Bonds. In 2012, San Francisco was ranked # 1 in a study that examined which U.S. metro areas have produced the most Major Leaguers since 1920. The San Francisco 49ers of the National Football League ( NFL ) were the longest - tenured major professional sports franchise in the city until moving in 2013. The team began play in 1946 as an All - America Football Conference ( AAFC ) league charter member, moved to the NFL in 1950 and into Candlestick Park in 1971. The team began playing its home games at Levi 's Stadium in Santa Clara in 2014, closer to the city of San Jose. The 49ers won five Super Bowl titles in the 1980s and 1990s. The San Francisco Warriors played in the NBA from 1962 -- 1971, before being renamed the Golden State Warriors prior to the 1971 -- 1972 season in an attempt to present the team as a representation of the whole state of California. The Warrior 's stadium, Oracle Arena, is currently located in Oakland, California. They have won 5 championships, including their most recent in 2017. At the collegiate level, the San Francisco Dons compete in NCAA Division I. Bill Russell led the Don 's basketball team to NCAA championships in 1955 and 1956. There is also the San Francisco State Gators, who compete in NCAA Division II. AT&T Park hosted the annual Fight Hunger Bowl college football game from 2002 through 2013 before it moved to Santa Clara. The Olympic Club. The Bay to Breakers footrace, held annually since 1912, is best known for colorful costumes and a celebratory community spirit. The San Francisco Marathon attracts more than 21,000 participants. The Escape from Alcatraz triathlon has, since 1980, attracted 2,000 top professional and amateur triathletes for its annual race. The Olympic Club, founded in 1860, is the oldest athletic club in the United States. Its private golf course has hosted the U.S. Open on five occasions. San Francisco hosted the 2013 America 's Cup yacht racing competition. With an ideal climate for outdoor activities, San Francisco has ample resources and opportunities for amateur and participatory sports and recreation. There are more than 200 miles ( 320 km ) of bicycle paths, lanes and bike routes in the city. San Francisco residents have often ranked among the fittest in the country. Golden Gate Park has miles of paved and unpaved running trails as well as a golf course and disc golf course. Boating, sailing, windsurfing and kitesurfing are among the popular activities on San Francisco Bay, and the city maintains a yacht harbor in the Marina District. Beaches and Parks See also : List of parks in San Francisco Ocean Beach, San Francisco with a view of the Cliff House Golden Gate Park as seen from Strawberry Hill Several of San Francisco 's parks and nearly all of its beaches form part of the regional Golden Gate National Recreation Area, one of the most visited units of the National Park system in the United States with over 13 million visitors a year. Among the GGNRA 's attractions within the city are Ocean Beach, which runs along the Pacific Ocean shoreline and is frequented by a vibrant surfing community, and Baker Beach, which is located in a cove west of the Golden Gate and part of the Presidio, a former military base. Also within the Presidio is Crissy Field, a former airfield that was restored to its natural salt marsh ecosystem. The GGNRA also administers Fort Funston, Lands End, Fort Mason, and Alcatraz. The National Park Service separately administers the San Francisco Maritime National Historical Park -- a fleet of historic ships and waterfront property around Aquatic Park. Alamo Square is one of the most well known parks in the area, and is often a symbol of San Francisco for its popular location for film and pop culture. There are more than 220 parks maintained by the San Francisco Recreation & Parks Department. The largest and best - known city park is Golden Gate Park, which stretches from the center of the city west to the Pacific Ocean. Once covered in native grasses and sand dunes, the park was conceived in the 1860s and was created by the extensive planting of thousands of non-native trees and plants. The large park is rich with cultural and natural attractions such as the Conservatory of Flowers, Japanese Tea Garden and San Francisco Botanical Garden. Lake Merced is a fresh - water lake surrounded by parkland and near the San Francisco Zoo, a city - owned park that houses more than 250 animal species, many of which are endangered. The only park managed by the California State Park system located principally in San Francisco, Candlestick Point was the state 's first urban recreation area. Law and government Main articles : Government of San Francisco, Politics of San Francisco, and Mayors of San Francisco San Francisco -- officially known as the City and County of San Francisco -- is a consolidated city - county, a status it has held since the 1856 secession of what is now San Mateo County. It is the only such consolidation in California. The mayor is also the county executive, and the county Board of Supervisors acts as the city council. The government of San Francisco is a charter city and is constituted of two co-equal branches. The executive branch is headed by the mayor and includes other citywide elected and appointed officials as well as the civil service. The 11 - member Board of Supervisors, the legislative branch, is headed by a president and is responsible for passing laws and budgets, though San Franciscans also make use of direct ballot initiatives to pass legislation. San Francisco City Hall The members of the Board of Supervisors are elected as representatives of specific districts within the city. Upon the death or resignation of mayor, the President of the Board of Supervisors becomes acting mayor until the full Board elects an interim replacement for the remainder of the term. In 1978, Dianne Feinstein assumed the office following the assassination of George Moscone and was later selected by the board to finish the term. In 2011, Edwin M. Lee was selected by the board to finish the term of Gavin Newsom, who resigned to take office as Lieutenant Governor of California. Because of its unique city - county status, local government exercises jurisdiction over property that would otherwise be located outside of its corporation limit. San Francisco International Airport, though located in San Mateo County, is owned and operated by the City and County of San Francisco. San Francisco also has a county jail complex located in San Mateo County, in an unincorporated area adjacent to San Bruno. San Francisco was also granted a perpetual leasehold over the Hetch Hetchy Valley and watershed in Yosemite National Park by the Raker Act in 1913. San Francisco serves as the regional hub for many arms of the federal bureaucracy, including the U.S. Court of Appeals, the Federal Reserve Bank, and the U.S. Mint. Until decommissioning in the early 1990s, the city had major military installations at the Presidio, Treasure Island, and Hunters Point -- a legacy still reflected in the annual celebration of Fleet Week. The State of California uses San Francisco as the home of the state supreme court and other state agencies. Foreign governments maintain more than seventy consulates in San Francisco. The municipal budget for fiscal year 2015 -- 16 was $8.99 billion, and is one of the largest city budgets in the United States. The City of San Francisco spends more per resident than any city other than Washington D.C, over $10,000 in FY 2015 -- 2016. The city employs around 27,000 workers. Crime The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense. Population and crime rates ( 2012 ) Population 820,363 Violent crime 5,777 7.04 Murder and nonnegligent manslaughter 69 0.08 Forcible rape 108 0.13 Robbery 3,484 4.25 Aggravated assault 2,116 2.58 Property crime 38,898 47.42 Burglary 5,317 6.48 Larceny - theft 28,242 34.43 Motor vehicle theft 5,339 6.51 Arson 207 0.25 CHP officers enforce the California Vehicle Code, pursue fugitives spotted on the highways, and attend to all significant obstructions and accidents within their jurisdiction. In 2011, 50 murders were reported, which is 6.1 per 100,000 people. There were about 134 rapes, 3,142 robberies, and about 2,139 assaults. There were about 4,469 burglaries, 25,100 thefts, and 4,210 motor vehicle thefts. The Tenderloin area has the highest crime rate in San Francisco : 70 % of the city 's violent crimes, and around one - fourth of the city 's murders, occur in this neighborhood. The Tenderloin also sees high rates of drug abuse, gang violence, and prostitution. Another area with high crime rates is the Bayview - Hunters Point area. In the first six months of 2015 there were 25 murders compared to 14 in the first six months of 2014. However, the murder rate is still much lower than in past decades. That rate, though, did rise again by the close of 2016. According to the San Francisco Police Department, there were 59 murders in the city in 2016, an annual total that marked a 13.5 % increase in the number of homicides ( 52 ) from 2015. Gangs Several street gangs operate in the city, including MS - 13, the Sureños and Norteños in the Mission District,. African - American street gangs familiar in other cities, including the Crips, have struggled to establish footholds in San Francisco, while police and prosecutors have been accused of liberally labeling young African - American males as gang members. Criminal gangs with shotcallers in China, including Triad groups such as the Wo Hop To, have been reported active in San Francisco. In 1977, an ongoing rivalry between two Chinese gangs led to a shooting attack at the Golden Dragon restaurant in Chinatown, which left 5 people dead and 11 wounded. None of the victims in this attack were gang members. Five members of the Joe Boys gang were arrested and convicted of the crime. In 1990, a gang - related shooting killed one man and wounded six others outside a nightclub near Chinatown. In 1998, six teenagers were shot and wounded at the Chinese Playground ; a 16 - year - old boy was subsequently arrested. Public Safety The San Francisco Police Department was founded in 1849. The portions of Golden Gate National Recreation Area located within the city, including the Presidio and Ocean Beach, are patrolled by the United States Park Police. The San Francisco Fire Department provides both fire suppression and emergency medical services to the city. Education Colleges and universities The Lone Mountain Campus of the University of San Francisco. See also : List of colleges and universities in San Francisco San Francisco State University Main Quad The University of California, San Francisco is the sole campus of the University of California system entirely dedicated to graduate education in health and biomedical sciences. It is ranked among the top five medical schools in the United States and operates the UCSF Medical Center, which ranks as the number one hospital in California and the number 5 in the country. UCSF is a major local employer, second in size only to the city and county government. A 43 - acre ( 170,000 m ) Mission Bay campus was opened in 2003, complementing its original facility in Parnassus Heights. It contains research space and facilities to foster biotechnology and life sciences entrepreneurship and will double the size of UCSF 's research enterprise. All in all, UCSF operates more than 20 facilities across San Francisco. The University of California, Hastings College of the Law, founded in Civic Center in 1878, is the oldest law school in California and claims more judges on the state bench than any other institution. San Francisco 's two University of California institutions have recently formed an official affiliation in the UCSF / UC Hastings Consortium on Law, Science & Health Policy. San Francisco State University is part of the California State University system and is located near Lake Merced. The school has approximately 30,000 students and awards undergraduate, master 's and doctoral degrees in more than 100 disciplines. The City College of San Francisco, with its main facility in the Ingleside district, is one of the largest two - year community colleges in the country. It has an enrollment of about 100,000 students and offers an extensive continuing education program. Founded in 1855, the University of San Francisco, a private Jesuit university located on Lone Mountain, is the oldest institution of higher education in San Francisco and one of the oldest universities established west of the Mississippi River. Golden Gate University is a private, nonsectarian, coeducational university formed in 1901 and located in the Financial District. With an enrollment of 13,000 students, the Academy of Art University is the largest institute of art and design in the nation. Founded in 1871, the San Francisco Art Institute is the oldest art school west of the Mississippi. The California College of the Arts, located north of Potrero Hill, has programs in architecture, fine arts, design, and writing. The San Francisco Conservatory of Music, the only independent music school on the West Coast, grants degrees in orchestral instruments, chamber music, composition, and conducting. The California Culinary Academy, associated with the Le Cordon Bleu program, offers programs in the culinary arts, baking and pastry arts, and hospitality and restaurant management. California Institute of Integral Studies, founded in 1968, offers a variety of graduate programs in its Schools of Professional Psychology & Health, and Consciousness and Transformation. Primary and secondary schools See also : List of high schools in California § San Francisco County Public schools are run by the San Francisco Unified School District as well as the State Board of Education for some charter schools. Lowell High School, the oldest public high school in the U.S. west of the Mississippi, and the smaller School of the Arts High School are two of San Francisco 's magnet schools at the secondary level. Public school students attend schools based on an assignment system rather than neighborhood proximity. Just under 30 % of the city 's school - age population attends one of San Francisco 's more than 100 private or parochial schools, compared to a 10 % rate nationwide. Nearly 40 of those schools are Catholic schools managed by the Archdiocese of San Francisco. Early education San Francisco has nearly 300 preschool programs primarily operated by Head Start, San Francisco Unified School District, private for - profit, private non-profit and family child care providers. All 4 - year old children living in San Francisco are offered universal access to preschool through the Preschool for All program. Media Main article : Media in San Francisco San Francisco Chronicle Building The major daily newspaper in San Francisco is the San Francisco Chronicle, which is currently Northern California 's most widely circulated newspaper. The Chronicle is most famous for a former columnist, the late Herb Caen, whose daily musings attracted critical acclaim and represented the `` voice of San Francisco ''. The San Francisco Examiner, once the cornerstone of William Randolph Hearst 's media empire and the home of Ambrose Bierce, declined in circulation over the years and now takes the form of a free daily tabloid, under new ownership. Sing Tao Daily claims to be the largest of several Chinese language dailies that serve the Bay Area. SF Weekly is the city 's alternative weekly newspaper. San Francisco Magazine and 7x7 are major glossy magazines about San Francisco. The national newsmagazine Mother Jones is also based in San Francisco. The San Francisco Bay Area is the sixth - largest television market and the fourth - largest radio market in the U.S. The city 's oldest radio station, KCBS ( AM ), began as an experimental station in San Jose in 1909, before the beginning of commercial broadcasting. KALW was the city 's first FM radio station when it signed on the air in 1941. The city 's first television station was KPIX, which began broadcasting in 1948. All major U.S. television networks have affiliates serving the region, with most of them based in the city. CNN, MSNBC, BBC, Al Jazeera America, Russia Today, and CCTV America also have regional news bureaus in San Francisco. Bloomberg West was launched in 2011 from a studio on the Embarcadero and CNBC broadcasts from One Market Plaza since 2015. ESPN uses the local ABC studio for their broadcasting. The regional sports network, Comcast SportsNet Bay Area and its sister station Comcast SportsNet California, are both located in San Francisco. The Pac - 12 Network is also based in San Francisco. Public broadcasting outlets include both a television station and a radio station, both broadcasting under the call letters KQED from a facility near the Potrero Hill neighborhood. KQED - FM is the most - listened - to National Public Radio affiliate in the country. Another local broadcaster, KPOO, is an independent, African - American owned and operated noncommercial radio station established in 1971. CNET, founded 1994, and Salon.com, 1995, are based in San Francisco. San Francisco - based inventors made important contributions to modern media. During the 1870s, Eadweard Muybridge began recording motion photographically and invented a zoopraxiscope with which to view his recordings. These were the first motion pictures. Then in 1927, Philo Farnsworth 's image dissector camera tube transmitted its first image. This was the first television. Transportation The Bay Bridge offers the only direct automobile connection to the East Bay. See also : Transportation in the San Francisco Bay Area Freeways and roads Main article : List of streets in San Francisco Due to its unique geography, and the freeway revolts of the late 1950s, Interstate 80 begins at the approach to the Bay Bridge and is the only direct automobile link to the East Bay. U.S. Route 101 connects to the western terminus of Interstate 80 and provides access to the south of the city along San Francisco Bay toward Silicon Valley. Northward, the routing for U.S. 101 uses arterial streets to connect to the Golden Gate Bridge, the only direct automobile link to Marin County and the North Bay. The Golden Gate Bridge is the only road connection to the North Bay. State Route 1 also enters San Francisco from the north via the Golden Gate Bridge and bisects the city as the 19th Avenue arterial thoroughfare, joining with Interstate 280 at the city 's southern border. Interstate 280 continues south from San Francisco, and also turns to the east along the southern edge of the city, terminating just south of the Bay Bridge in the South of Market neighborhood. After the 1989 Loma Prieta earthquake, city leaders demolished the Embarcadero Freeway and a portion of the Central Freeway, converting them into street - level boulevards. State Route 35 enters the city from the south as Skyline Boulevard and terminates at its intersection with Highway 1. State Route 82 enters San Francisco from the south as Mission Street, and terminates shortly thereafter at its junction with 280. The Western Terminus of the historic transcontinental Lincoln Highway, the first road across America, is in San Francisco 's Lincoln Park. Public Transportation See also : San Francisco Municipal Railway A cable car ascending Hyde St, with Alcatraz on the bay behind 32 % of San Francisco residents use public transportation in daily commuting to work, ranking it first on the West Coast and third overall in the United States. The San Francisco Municipal Railway, known as Muni, is the primary public transit system of San Francisco. Muni is the seventh - largest transit system in the United States, with 210,848,310 rides in 2006. The system operates both a combined light rail and subway system, the Muni Metro, and a large bus network. Additionally, it runs a historic streetcar line, which runs on Market Street from Castro Street to Fisherman 's Wharf. It also operates the famous cable cars, which have been designated as a National Historic Landmark and are a major tourist attraction. Bay Area Rapid Transit, a regional Rapid Transit system, connects San Francisco with the East Bay through the underwater Transbay Tube. The line runs under Market Street to Civic Center where it turns south to the Mission District, the southern part of the city, and through northern San Mateo County, to the San Francisco International Airport, and Millbrae. Another Commuter Rail system, Caltrain, runs from San Francisco along the San Francisco Peninsula to San Jose. Historically, trains operated by Southern Pacific Lines ran from San Francisco to Los Angeles, via Palo Alto and San Jose. Amtrak California Thruway Motorcoach runs a shuttle bus from San Francisco to its rail station across the Bay in Emeryville. Lines from Emeryville Station include the Capitol Corridor, San Joaquin, California Zephyr, and Coast Starlight. Thruway service also runs south to San Luis Obispo, California with connection to the Pacific Surfliner. The Golden Gate Ferry M / V Del Norte docked at the Ferry Building. San Francisco Bay Ferry operates from the Ferry Building and Pier 39 to points in Oakland, Alameda, Bay Farm Island, South San Francisco, and north to Vallejo in Solano County. The Golden Gate Ferry is the other ferry operator with service between San Francisco and Marin County. Soltrans runs supplemental bus service between the Ferry Building and Vallejo. San Francisco was an early adopter of carsharing in America. The non profit City Carshare opened in 2001. Zipcar closely followed. To accommodate the large amount of San Francisco citizens who commute to the Silicon Valley daily, companies like Google and Apple have begun to provide private bus transportation for their employees, from San Francisco locations to the tech start - up hotspot. These buses have quickly become a heated topic of debate within the city, as protesters claim they block bus lanes and delay public buses. Airports San Francisco International Airport is the primary airport of San Francisco and the Bay Area. Main article : San Francisco International Airport Though located 13 miles ( 21 km ) south of downtown in unincorporated San Mateo County, San Francisco International Airport ( SFO ) is under the jurisdiction of the City and County of San Francisco. SFO is a hub for United Airlines and Virgin America. SFO is a major international gateway to Asia and Europe, with the largest international terminal in North America. In 2011, SFO was the 8th busiest airport in the U.S. and 22nd busiest in the world, handling over 40.9 million passengers. Located across the bay, Oakland International Airport is a popular, low - cost alternative to SFO. Geographically, Oakland Airport is approximately the same distance from downtown San Francisco as SFO, but due to its location across San Francisco Bay, it is greater driving distance from San Francisco. Cycling and walking Cycling is a popular mode of transportation in San Francisco. 75,000 residents commute by bicycle per day. Bay Area Bike Share launched in August 2013 with 700 bikes in downtown San Francisco and selected cities south to San Jose. The San Francisco Municipal Transportation Agency and Bay Area Air Quality Management District are responsible for the operation with management provided by Alta Bicycle Share. The system will be expanded in the future. Pedestrian traffic is a major mode of transport. In 2015, Walk Score ranked San Francisco the second-most walkable city in the United States. San Francisco has significantly higher rates of pedestrian and bicyclist traffic deaths than the United States on average. In 2013, 21 pedestrians were killed in vehicle collisions, the highest since 2001, which is 2.5 deaths per 100,000 population -- 70 % higher than the national average of 1.5 deaths per 100,000 population. Cycling is growing in San Francisco. Annual bicycle counts conducted by the Municipal Transportation Agency ( MTA ) in 2010 showed the number of cyclists at 33 locations had increased 58 % from the 2006 baseline counts. In 2008, the MTA estimated that about 128,000 trips were made by bicycle each day in the city, or 6 % of total trips. Since 2002, improvements in cycling infrastructure in recent years, including additional bike lanes and parking racks, have made cycling in San Francisco safer and more convenient. Since 2006, San Francisco has received a Bicycle Friendly Community status of `` Gold '' from the League of American Bicyclists. Notable people Main article : List of people from San Francisco Consulates and Sister cities Main articles : Sister cities of San Francisco, California and List of diplomatic missions in San Francisco San Francisco participates in the Sister Cities program. A total of 41 consulates general and 23 honorary consulates have offices in the San Francisco Bay Area. Sister Cities ( not including other types of municipal partnerships such as `` friendship cities '' ) Abidjan, Cote d'Ivoire Amman, Jordan Assisi, Umbria, Italy Barcelona, Spain Bangalore, India Cork, Ireland Haifa, Israel Ho Chi Minh City, Vietnam Krakow, Poland Manila, Philippines Osaka, Japan Paris, France Seoul, South Korea Shanghai, China Sydney, Australia Taipei, Taiwan Thessaloniki, Greece Zürich, Switzerland See also San Francisco Bay Area portal New Spain portal Architecture of San Francisco California earthquake forecast Gold Mountain ( Chinese name for part of North America ) List of cities and towns in California List of cities and towns in the San Francisco Bay Area List of counties in California List of largest California cities by population Ships lost in San Francisco Notes Jump up ^ The coordinates of the station are 37 ° 46 ′ 14 '' N 122 ° 25 ′ 37 '' W ﻿ / ﻿ 37.7706 ° N 122.4269 ° W ﻿ / 37.7706 ; - 122.4269. Precipitation, high temperature, low temperature, snow, and snow depth records date from 1 October 1849, 1 June 1874, 1 January 1875, 1 January 1876, and 1 January 1922, respectively. Jump up ^ Mean monthly maxima and minima ( i.e. the expected highest and lowest temperature readings at any point during the year or given month ) calculated based on data at said location from 1981 to 2010. References ^ Jump up to : Edward F. O'Day ( October 1926 ). `` The Founding of San Francisco ''. San Francisco Water. Spring Valley Water Authority. Archived from the original on July 27, 2010. Retrieved February 14, 2009. Jump up ^ `` San Francisco : Government ''. SFGov.org. Archived from the original on March 16, 2012. Retrieved March 8, 2012. San Francisco was incorporated as a City on April 15th, 1850 by act of the Legislature. Jump up ^ `` Office of the Mayor : Home ''. City & County of San Francisco. Retrieved December 10, 2014. Jump up ^ `` Statewide Database ''. UC Regents. Retrieved November 21, 2014. Jump up ^ `` Board of Supervisors ''. City and County of San Francisco. Retrieved January 28, 2017. Jump up ^ `` Communities of Interest -- City ''. California Citizens Redistricting Commission. Retrieved September 23, 2014. Jump up ^ `` Members Assembly ''. California State Assembly. Retrieved September 23, 2014. Jump up ^ `` Communities of Interest -- City ''. California Citizens Redistricting Commission. Retrieved September 23, 2014. Jump up ^ `` Directory of Representatives ''. U.S. House of Representatives. Jump up ^ `` 2016 U.S. Gazetteer Files ''. United States Census Bureau. Retrieved June 28, 2017. Jump up ^ `` San Francisco ''. Geographic Names Information System. United States Geological Survey. ^ Jump up to : `` Elevations and Distances in the United States ''. US Geological Survey. April 29, 2005. Retrieved October 29, 2014. ^ Jump up to : `` QuickFacts : San Francisco County, California ''. US Census Bureau. Retrieved April 3, 2017. Jump up ^ `` Population and Housing Unit Estimates ''. U.S. Census Bureau. August 15, 2017. Retrieved August 15, 2017. Jump up ^ `` ZIP Code ( tm ) Lookup ''. United States Postal Service. Retrieved November 9, 2014. Jump up ^ `` NPA City Report ''. North American Numbering Plan Administration. Retrieved November 5, 2014. ^ Jump up to : Garling, Caleb ( June 30, 2013 ). `` Do n't Call It Frisco : The History of San Francisco 's Nicknames ''. The Bold Italic. Retrieved June 18, 2016. Jump up ^ `` GCT - PH1 -- Population, Housing Units, Area, and Density : 2010 -- County -- Census Tract ''. 2010 United States Census Summary File 1. United States Census Bureau. Retrieved November 5, 2015. Jump up ^ California, Department of Finance State of. `` Demographic Projections ''. www.dof.ca.gov. Retrieved 2017 - 08 - 17. ^ Jump up to : Coy, Owen Cochran ( 1919 ). Guide to the County Archives of California. Sacramento, California : California Historical Survey Commission. p. 409. ^ Jump up to : Montagne, Renée ( April 11, 2006 ). `` Remembering the 1906 San Francisco Earthquake ''. People & Places. NPR. Retrieved June 13, 2008. ^ Jump up to : `` Port of Embarkation Essay -- World War II in the San Francisco Bay Area ''. A National Register of Historic Places Travel Itinerary :. US Department of the Interior. August 28, 2007. Retrieved June 22, 2011. Jump up ^ `` Charter of the United Nations United Nations ''. www.un.org. Retrieved December 29, 2016. Jump up ^ `` History of the United Nations United Nations ''. www.un.org. Retrieved December 29, 2016. Jump up ^ `` San Francisco -- the birthplace of the United Nations ''. San Francisco Chronicle. Retrieved December 29, 2016. Jump up ^ Top U.S. Destinations for International Visitors. The Hotel Price Index. Retrieved April 12, 2014. Jump up ^ Mike Moffitt ( April 4, 2014 ). `` The odd nicknames of California cities ''. SFChronicle.com. Retrieved July 22, 2017. Jump up ^ `` 2016 quality of living rankings ''. Mercer. February 23, 2016. Jump up ^ Stewart, Suzanne B. ( November 2003 ). `` Archaeological Research Issues For The Point Reyes National Seashore -- Golden Gate National Recreation Area '' ( PDF ). Sonoma State University -- Anthropological Studies Center. Retrieved June 12, 2008. Jump up ^ `` Visitors : San Francisco Historical Information ''. City and County of San Francisco. n.d. Archived from the original on March 1, 2006. Retrieved June 10, 2008. Jump up ^ The Virtual Museum of the City of San Francisco ( July 16, 2004 ). `` From the 1820s to the Gold Rush ''. The Virtual Museum of the City of San Francisco. Archived from the original on October 22, 2009. Retrieved June 13, 2008. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 4 -- 5. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ Sourdough bread was a staple of western explorers and miners of the 19th century. It became an iconic symbol of San Francisco, and is still a staple of city life today. Tamony, Peter ( October 1973 ). `` Sourdough and French Bread ''. Western Folklore. Western States Folklore Society. 32 ( 4 ) : 265 -- 270. doi : 10.2307 / 1498306. Jump up ^ `` San Francisco 's First Brick Building ''. The Virtual Museum of the City of San Francisco. July 16, 2004. Retrieved June 13, 2008. ^ Jump up to : Richards, Rand ( 1992 ). Historic San Francisco : A Concise History and Guide. Heritage House. ISBN 978 - 1 - 879367 - 00 - 5. OCLC 214330849. Jump up ^ Harris, Ron ( November 14, 2005 ). `` Crews Unearth Shipwreck on San Francisco Condo Project ''. Associated Press. Retrieved September 4, 2006. Jump up ^ Filion, Ron S. `` Buried Ships ''. SFgenealogy. Retrieved April 19, 2016. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 31 -- 33. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ `` The miners came in forty - nine, / The whores in fifty - one, / And when they got together / They produced the native son. '' Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 237 -- 238. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ Construction of the Pacific Railroad was partially ( albeit reluctantly ) funded by the City and County of San Francisco Pacific Railroad Bond issue under the provisions of `` An Act to Authorize the Board of Supervisors of the City and County of San Francisco to take and subscribe One Million Dollars to the Capital Stock of the Western Pacific Rail Road Company and the Central Pacific Rail Road Company of California and to provide for the payment of the same and other matters relating thereto. '' approved on April 22, 1863, as amended by § 5 of the `` Compromise Act of 1864 '' approved on April 4, 1864. The bond issue was objected to by the Mayor and the Board of Supervisors, however, and they were not delivered to the WPRR and CPRR until 1865 after Writs of Mandamus ordering such were issued by the Supreme Court of the State of California in 1864 ( `` The People of the State of California on the relation of the Central Pacific Railroad Company vs. Henry P. Coon, Mayor ; Henry M. Hale, Auditor ; and Joseph S. Paxson, Treasurer, of the City and County of San Francisco '' 25 Cal 635 ) and 1865 ( `` The People ex rel The Central Pacific Railroad Company of California vs. The Board of Supervisors of the City and County of San Francisco, and Wilhelm Lowey, Clerk '' 27 Cal 655 ) ^ Jump up to : `` Historical Census Statistics On Population Totals By Race, 1790 to 1990, and By Hispanic Origin, 1970 to 1990, For Large Cities And Other Urban Places In The United States ''. U.S. Census Bureau. Archived from the original on August 6, 2012. Retrieved December 18, 2011. Jump up ^ `` Under Three Flags '' ( PDF ). Golden Gate National Recreation Area Brochures. US Department of the Interior. November 2004. Retrieved June 22, 2011. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 44 -- 55. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ Kalisch, Philip A. ( Summer 1972 ). `` The Black Death in Chinatown : Plague and Politics in San Francisco 1900 -- 1904 ''. Arizona and the West. Journal of the Southwest. 14 ( 2 ) : 113 -- 136. JSTOR 40168068. Jump up ^ `` 1906 Earthquake : Fire Fighting ''. Golden Gate National Recreation Area. US Department of the Interior. December 24, 2003. Retrieved June 13, 2008. Jump up ^ `` Casualties and Damage after the 1906 earthquake ''. Earthquake Hazards Program -- Northern California. US Geological Survey. January 25, 2008. Retrieved June 13, 2008. Jump up ^ `` 1906 Earthquake and the Army ''. Golden Gate National Recreation Area. US Department of the Interior. August 25, 2004. Retrieved June 13, 2008. Jump up ^ `` Jack London Writes of the 1906 San Francisco Earthquake and Fire ''. Sfmuseum.org. May 5, 1906. Retrieved June 15, 2013. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 56 -- 62. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ `` SPUR Our Mission and History ''. Retrieved March 26, 2013. Jump up ^ O'Brien, Tricia ( 2008 ). San Francisco 's Pacific Heights and Presidio Heights. San Francisco : Arcadia Publishing. p. 7. ISBN 978 - 0 - 7385 - 5980 - 3. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. p. 9. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ `` Virtual Museum of the City of San Francisco -- M.M. O'Shaughnessy Employed as City Engineer ''. Retrieved March 16, 2013. Jump up ^ `` San Francisco Gold Rush Banking -- 1849 ''. The Virtual Museum of the City of San Francisco. June 24, 2004. Retrieved June 13, 2008. Jump up ^ Fang, Eric ( February 1999 ). `` Urban Renewal Revisited : A Design Critique ''. SPUR Newsletter. San Francisco Planning and Urban Research Association. Archived from the original on October 11, 2009. Retrieved August 3, 2009. Jump up ^ Rubin, Jasper ( November 1999 ). `` The Decline of the Port -- A look at the transformation of the Port of San Francisco ''. SPUR Newsletter. San Francisco Planning and Urban Research Association. Retrieved January 5, 2013. The final, insurmountable decline in San Francisco 's shipping activity was heralded in 1958 by the departure of the first containerized freighter from San Francisco Bay. Jump up ^ Terplan, Egon ( June 7, 2010 ). `` Organizing for Economic Growth -- A new approach to business attraction and retention in San Francisco ''. SPUR Report. San Francisco Planning and Urban Research Association. Retrieved January 5, 2013. During the 1960s and 1970s San Francisco 's historic maritime industry relocated to Oakland... San Francisco remained a center for business and professional services ( such as consulting, law, accounting and finance ) and also successfully developed its tourism sector, which became the leading local industry. Jump up ^ Willis, James ; Habib, Jerry ; Brittan, Jeremy ( April 19, 2004 ). `` San Francisco Planning Department Census Data Analysis ''. San Francisco State University. Archived from the original ( PPT ) on July 18, 2011. Retrieved June 13, 2008. Jump up ^ Minton, Torri ( September 20, 1998 ). `` Race Through Time ''. San Francisco Chronicle. Hearst Communications. p. SC - 4. Retrieved September 11, 2013. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 240 -- 242. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ `` American Experience : Summer of Love : Film Description ''. Website for American Experience documentary on the Summer of Love. PBS. March 14, 2007. Retrieved June 17, 2008. Jump up ^ `` Fear in the Streets of San Francisco ''. Time. April 29, 1974. Archived from the original on October 18, 2008. Retrieved August 28, 2006. Jump up ^ `` San Francisco History : The 1970s and 1980s : Gay Rights ''. Destinations : San Francisco. Frommers.com. Archived from the original on July 18, 2001. Retrieved June 17, 2008. Jump up ^ `` Pyramid Facts and Figures ''. Company Profile. Transamerica Insurance and Investment Group. Retrieved June 13, 2008. Jump up ^ Wiley, Peter Booth ( 2000 ). National trust guide - San Francisco : America 's guide for architecture and history travelers. New York : John Wiley & Sons, Inc. pp. 95 -- 96. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Jump up ^ Fagan, Kevin ( August 4, 2006 ). `` S.F. 's Homeless Aging on the Street / Chronic health problems on the rise as median age nears 50 ''. San Francisco Chronicle. Retrieved March 6, 2012. The findings support what many social workers have long suspected -- that there was a `` big bang '' homeless population explosion as federal housing programs were slashed and the closing of mental hospitals hit home in the mid-1980s and that this core group constitutes the bulk of the street population. Jump up ^ Nieves, Evelyn ( November 5, 2000 ). `` Mission District Fights Case of Dot - Com Fever ''. The New York Times. Retrieved March 5, 2012. Jump up ^ Nolte, Carl ( January 2, 2008 ). `` High - rises are a sign of the times in changing San Francisco ''. San Francisco Chronicle. Retrieved July 9, 2012. Jump up ^ Ted Egan ( April 3, 2006 ). `` City and County of San Francisco : An Overview of San Francisco 's Recent Economic Performance '' ( PDF ). Report prepared for Mayor 's Office of Economic and Workforce Development. ICF Consulting. Archived from the original ( PDF ) on February 1, 2009. Retrieved June 19, 2008. Another positive trend for the future is San Francisco 's highly entrepreneurial, flexible and innovative economy... San Francisco 's very high reliance on small business and self - employment is typical of other dynamic, fast - growing, high - technology areas across the country. Jump up ^ Graham, Tom ( November 7, 2004 ). `` Peak Experience ''. San Francisco Chronicle. Hearst Communications. p. PK - 23. Retrieved June 13, 2008. Jump up ^ Lee, Henry K. ( January 16, 1997 ). `` Mount Davidson Cross Called Landmark by Panel ''. San Francisco Chronicle. Retrieved June 17, 2008. Jump up ^ Smith, Charles ( April 15, 2006 ). `` What San Francisco did n't learn from the ' 06 quake ''. San Francisco Chronicle. Retrieved June 30, 2008. Jump up ^ Selna, Robert ( June 29, 2008 ). `` S.F. leaders ignore weak buildings ' quake risk ''. San Francisco Chronicle. p. A-1. Retrieved June 30, 2008. Jump up ^ California Earthquake forecast -- UCERF3 -- USGS Factsheet ( non-technical ) Mar, 2015. predicts Earthquake risk for 30 years in California, California earthquake forecast. Jump up ^ `` Liquefaction Damage in the Marina District during the 1989 Loma Prieta earthquake '' ( PDF ). California Geological Survey. Retrieved June 17, 2008. Jump up ^ Matt Baume ( April 14, 2010 ). `` The Lure of the Creeks Buried Beneath San Francisco 's Streets ''. Streetsblog San Francisco. Retrieved January 31, 2013. Jump up ^ The Official San Francisco Chinatown Website. Sanfranciscochinatown.com. Retrieved February 16, 2012. Jump up ^ Depicting Otherness : Images of San Francisco 's Chinatown. College Street Journal ( October 11, 2002 ). Retrieved February 16, 2012. Jump up ^ Bacon, Daniel : Walking the Barbary Coast Trail 2nd ed., pp. 52 -- 53, Quicksilver Press, 1997 Jump up ^ `` Chinatown / Grant Avenue ''. Archived from the original on June 15, 2011. Retrieved August 31, 2010. CS1 maint : BOT : original - url status unknown ( link ). San Francisco Days Jump up ^ `` S.F. supervisors OK Warriors arena for Mission Bay ''. San Francisco Chronicle. Retrieved February 8, 2016. Jump up ^ `` The Haight ''. The San Francisco Chronicle. Retrieved August 3, 2009. Jump up ^ Bishop, Katherine ( October 13, 1988 ). `` Haight - Ashbury Journal ; Love and Hate Linger In Ex-Hippie District ''. The New York Times. Retrieved August 3, 2009. Jump up ^ `` The Marina ''. SFGate San Francisco Neighborhood Guide. October 27, 2011. Retrieved August 20, 2013. Jump up ^ Morgan, Benjamin ( Director ) ( 2007 ). `` Quality of Life ( film website ) ''. Mission District History. Retrieved July 25, 2010. Jump up ^ `` The Castro ''. The San Francisco Chronicle. Retrieved August 3, 2009. Jump up ^ Chow, Andrew ( March 22, 2002 ). `` Dismal APA Turnout at First Redistricting Meetings ''. Asian Week. Jump up ^ Climate of San Francisco : Narrative Description Golden Gate Weather Services. Retrieved September 5, 2006. Jump up ^ Osborn, Liz. `` Coolest US Cities in Summer ''. Weather Extremes. Current Results Nexus. Archived from the original on July 26, 2010. Retrieved July 25, 2010. Jump up ^ Gilliam, Harold ( July -- September 2002 ). `` Cutting Through the Fog : Demystifying the Summer Spectacle ''. Bay Nature. ^ Jump up to : `` NowData -- NOAA Online Weather Data ''. National Oceanic and Atmospheric Administration. Retrieved 2016 - 04 - 17. Jump up ^ Climate of San Francisco : Snowfall Golden Gate Weather Services. Retrieved December 3, 2006. Jump up ^ Peter Hartlaub ( November 29, 2012 ). `` Blizzard of awesome : The San Francisco snowfall of 1976 ''. San Francisco Chronicle. Retrieved February 1, 2013. Jump up ^ Ruberstein, Steve ; Asimov, Nanette ; Lyons, Jenna ( September 1, 2017 ). `` San Francisco hits 106 degrees -- shatters all - time record ''. San Francisco Chronicle. Retrieved September 2, 2017. 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Hearst Communications Inc. p. C - 1. Archived from the original on May 16, 2012. Retrieved June 16, 2008. Jump up ^ `` Fact Sheet : International Terminal '' ( PDF ). San Francisco International Airport. May 2007. Archived from the original ( PDF ) on August 7, 2013. Retrieved June 16, 2008. Jump up ^ `` Preliminary World Airport Traffic 2011 ( Table 2 -- TOTAL PASSENGER TRAFFIC 2011 ) '' ( PDF ). Airports Council International. March 27, 2012. Retrieved April 22, 2012. Jump up ^ `` 2011 Bicycle Count Report '' ( PDF ). SFMTA. City of San Francisco. December 2011. Retrieved May 17, 2012. Jump up ^ `` SFMTA -- Bikesharing ''. Retrieved March 15, 2013. Jump up ^ `` We 're Expanding ! ''. Retrieved February 3, 2017... Jump up ^ Said, Carolyn ( July 20, 2011 ). `` S.F., Oakland in top 10 most walkable U.S. cities ''. San Francisco Chronicle. Retrieved July 20, 2011. Jump up ^ `` The 10 most walkable U.S. cities ''. MarketWatch. 2011. Retrieved July 20, 2011. Jump up ^ `` Walk Score Ranks The Most Walkable Cities of 2015 -- @ Redfin ''. Retrieved September 25, 2015. Jump up ^ Sabatini, Joshua ( January 16, 2014 ). `` Lee unveils push for pedestrian safety ''. SF Examiner. Retrieved January 19, 2014. Jump up ^ `` Traffic Safety Facts, 2012 Motor Vehicle Crashes : Overview '' ( PDF ). National Highway Traffic Safety Administration. Retrieved January 19, 2014. Jump up ^ `` City of San Francisco 2010 Bicycle Count Report '' ( PDF ). San Francisco Municipal Transportation Agency, 2010, p. 3. Jump up ^ `` 2008 San Francisco State of Cycling Report '' ( PDF ). San Francisco Municipal Transportation Agency. 2008. p. 9. Retrieved October 1, 2014. Jump up ^ 2012 San Francisco State of Cycling Report ( PDF ) ( Report ). San Francisco Municipal Transportation Agency. 2012. p. 2. Retrieved October 24, 2015. Jump up ^ `` Bicycle Friendly America 2010 '' ( PDF ). American Bicyclist. League of American Bicyclists : 17. 2010. Retrieved October 24, 2015. Jump up ^ `` San Francisco Sister Cities ''. Retrieved February 1, 2017. Jump up ^ `` REGISTER OF FOREIGN CONSULATES IN SAN FRANCISCO '' ( PDF ). Archived from the original ( PDF ) on November 23, 2014. Retrieved March 11, 2013. Bibliography De La Perouse, Jean Francois ; Yamane, Linda Gonsalves ; Margolin, Malcolm ( 1989 ). Life in a California Mission : Monterey in 1786 : The Journals of Jean Francois De La Perouse. Heyday Books. ISBN 978 - 0 - 930588 - 39 - 7. OCLC 20368802. Hansen, Gladys ( 1995 ). San Francisco Almanac : Everything you want to know about the city. Chronicle Books. ISBN 978 - 0 - 8118 - 0841 - 5. OCLC 30702907. London, Jack ( May 5, 1906 ). `` The Story of an Eyewitness by Jack London ''. Collier 's, the National Weekly. Richards, Rand ( 1991 ). Historic San Francisco : A Concise History and Guide. Heritage House. ISBN 978 - 1 - 879367 - 00 - 5. OCLC 214330849. Ungaretti, Lorri ( 2005 ). San Francisco 's Richmond District. Arcadia Publishing. ISBN 978 - 0 - 7385 - 3053 - 6. OCLC 62249656. Wiley, Peter Booth ( 2000 ). National trust guide San Francisco : America 's guide for architecture and history travelers. John Wiley & Sons, Inc. ISBN 978 - 0 - 471 - 19120 - 9. OCLC 44313415. Further reading Asbury, Hubert ( 1989 ). The Barbary Coast : An Informal History of the San Francisco Underworld. Dorset Press. ISBN 978 - 0 - 88029 - 428 - 7. OCLC 22719465. Bronson, William ( 2006 ). The Earth Shook, the Sky Burned. Chronicle Books. ISBN 978 - 0 - 8118 - 5047 - 6. OCLC 65223734. Cassady, Stephen ( 1987 ). Spanning the Gate. Square Books. ISBN 978 - 0 - 916290 - 36 - 8. OCLC 15229396. Dillon, Richard H. ( 1998 ). High Steel : Building the Bridges Across San Francisco Bay. Celestial Arts ( Reissue edition ). ISBN 978 - 0 - 88029 - 428 - 7. OCLC 22719465. Ferlinghetti, Lawrence ( 1980 ). Literary San Francisco : A pictorial history from its beginnings to the present day. Harper & Row. ISBN 978 - 0 - 06 - 250325 - 1. OCLC 6683688. Hartman, Chester ( 2002 ). City for Sale : The Transformation of San Francisco. University of California Press. ISBN 978 - 0 - 520 - 08605 - 0. OCLC 48579085. Holliday, J.S. ( 1999 ). Rush for Riches : Gold Fever and the Making of California. University of California Press. ISBN 978 - 0 - 520 - 21402 - 6. OCLC 37545551. Lotchin, Roger W. ( 1997 ). San Francisco, 1846 -- 1856 : From Hamlet to City. University of Illinois Press. ISBN 978 - 0 - 252 - 06631 - 3. OCLC 35650934. Margolin, Malcolm ( 1981 ). The Ohlone Way : Indian Life in the San Francisco - Monterey Bay Area. Heydey Books. ISBN 978 - 0 - 930588 - 01 - 4. OCLC 4628382. Maupin, Armistead ( 1978 ). Tales of the City. Harper Collins. ISBN 978 - 0 - 06 - 096404 - 7. OCLC 29847673. Solnit, Rebecca. Infinite City : A San Francisco Atlas ( University of California Press, 2010 ). 144 pp. ISBN 978 - 0 - 520 - 26250 - 8 ; online review Thomas, Gordon & Witts, Max Morgan ( 1971 ). The San Francisco Earthquake. Stein and Day. ISBN 978 - 0 - 8128 - 1360 - 9. OCLC 154735. Winfield, P.H., The Charter of San Francisco ( The fortnightly review Vol. 157 -- 58 : 2 ( 1945 ), p. 69 -- 75 ) San Francisco ( article ) ( 1870 ) The Overland Monthly, January 1870 Vol. 4, No. 1, pp. 9 -- 23. San Francisco : A. 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Question: when was the city of san francisco founded
Answer: June 29, 1776