The 2010 United States Census reported that San Francisco, the finance, business, real estate, transportation, social, and cultural center of the SF Bay Area, had a population of 805,235. The population density was 3,472.5 people per square mile (1,340.7/square km). The Census claimed that 780,971 people (97.0% of the population) resided in households, 18,902 (2.3%) resided in non-institutionalized group quarters, and additionally 5,362 (0.7%) were institutionalized. Independently, the California Department of Finance estimated the population of San Francisco at 856,095, as of January 1, 2010. Along with over seventeen thousand people per square mile, San Francisco is the second-most densely populated major American city..San Francisco is with no doubt the traditional focus of the San Francisco Bay Area and forms the main San Francisco-Oakland-Fremont Metropolitan Statistical Area as well as the greater San Jose-San Francisco-Oakland Combined Statistical Area (CSA) with over 7,000,000, making it the fifth largest in the US as of the 2000 Census.
USA Today reported that Rob Pitingolo, a researcher who measured university graduates per square mile, found that San Francisco had the greatest rate in California at 7,031 for each square mile, or exceeding 344,000 total college/university graduates in San Francisco. Of all major cities, San Francisco ranks 2nd behind Seattle for the percentage of residents with at least one college degree. Over 44% of adults residing within San Francisco have a bachelor's or higher degree, consistent with the very large student populations in Oakland, Berkeley, San Francisco.
San Francisco ranks 8th of major cities worldwide in the number of billionaires considered to be living within city limits. San Francisco ranks 3rd of US cities in median household income. Median family income was $81,136. Following a national phenomena, an emigration of middle class families is contributing to widening income disparity and has left the city with 14.5% children, a lower proportion than any other large American city.
The unemployment rate stands at 9.5% as of January 2011. Homelessness has been a chronic in addition to controversial issue for San Francisco since the early 1980s. San Francisco is believed to have the highest proportion of homeless people of any major American city. San Francisco's poverty rates are lower than the country wide average. The overall and family poverty rates stands at 11.8% and 7.4%, respectively.