San Francisco, officially the
City and County of San Francisco, is the financial, cultural, and transportation center of the
San Francisco Bay Area, a region of 7.6 million people which includes
San Jose and
Oakland.
The only
consolidated city-county in California,
it encompasses a land area of about 46.9 square miles
on the northern end of the
San Francisco Peninsula, giving it a density of about 17,179 people per square mile. It is the most densely settled large city in the state of California and the
second-most densely populated large city in the United States after
New York City.
San Francisco is the
fourth most populous city in California and the
13th most populous city in the United States, with a population of 805,235 as of the
2010 Census. The San Francisco-Oakland-Fremont metropolitan area has a population of 4,335,391.