San Francisco, officially the City and County of San Francisco, is a commercial, financial, and cultural center within Northern California. With a population of 827,526 residents as of 2024, San Francisco is the fourth-most populous city in the state of California and the 17th-most populous in the United States. It covers a land area of 46.9 square miles at the upper end of the San Francisco Peninsula, making it the second-most densely populated major U.S. city and 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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