San Francisco, officially the City and County of San Francisco, is a commercial, financial, and cultural center within Northern California, United States. With a population of 827,526 residents as of 2024, San Francisco is the fourth-most populous city in California and the 17th-most populous in the U.S.; with a land area of 46.9 square miles at the upper end of the San Francisco Peninsula, it is the fifth-most densely populated U.S. county. Among U.S. cities proper with over 250,000 residents, San Francisco is ranked first by per capita income and sixth by aggregate income as of 2023. San Francisco anchors the 13th-most populous metropolitan statistical area in the U.S., with almost 4.6 million residents in 2023. The larger San Jose–San Francisco–Oakland combined statistical area, the fifth-largest urban region in the U.S., had a 2023 estimated population of over nine million.
Country: United States
State: California
County: San Francisco
Incorporated: April 15, 1850
Founded by: Juan Bautista de Anza · José Joaquín Moraga · Francisco Palóu
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Site visitors: Over 1M in the past month
Destinations: San Francisco Zoo, Alcatraz, Aquarium of the Bay, San Francisco Bay
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