San Francisco At Night, California, United States

San Francisco has a minority-majority population, as non-Hispanic whites comprise less than half of the population, down from 92.5% in 1940. According to the 2010 Census, Asians of any nationality make up 33.3% of the population with those of Chinese ethnicity constituting the largest single ethnic group in San Francisco at 21.4% of the population; the other Asian groups are Filipinos (4.5%), Vietnamese (1.6%), Japanese (1.3%), Asian Indians (1.2%), Koreans (1.2%), Thais (0.3%), Burmese (0.2%), Cambodians (0.2%), and both Indonesians and Laotians make up less than 0.1% of the city's population. The Pacific Islander population is 0.4%, with about half of them being of Samoan descent. Hispanics of any race make up 15.0% of the population, mainly people of Mexican (7.4%), Salvadoran (2.0%), and other Central American descent (2.2%). San Francisco's African American population has declined in recent decades, from 13.4% in 1970 to 6.1%. The current percentage of African Americans in San Francisco is similar to that of the state of California; conversely, the city's percentage of Hispanic residents is less than half of that of the state. Native Californians form a relatively small percentage of the city's population: only 37.7% of its residents were born in California, while 25.2% were born in a different U.S. state. More than a third of city residents (35.6%) were born outside the United States.
According to the 2005 American Community Survey, San Francisco has the highest percentage of gay and lesbian individuals of any of the 50 largest U.S. cities, at 15.4%. 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.
Of all major cities, San Francisco ranks second behind Seattle for the percentage of residents with a college degree. Over 44% of adults within the city limits have a bachelor's or higher degree. USA Today reported that Rob Pitingolo, a researcher who measured college graduates per square mile, found that 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 km2).
San Francisco ranks third of American cities in median household income with a 2007 value of $65,519. Median family income is $81,136, and San Francisco ranks 8th of major cities worldwide in the number of billionaires known to be living within city limits. Following a national trend, an emigration of middle class families is contributing to widening income disparity and has left the city with a lower proportion of children, 14.5%, than any other large American city.