• San Francisco
  • Jiaxian County

San Francisco (/ˌsæn frənˈsɪskoʊ/; Spanish for "Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California in the United States. The city proper is the fourth most populous in California and 17th most populous in the United States, with 815,201 residents as of 2021. It covers a land area of 46.9 square miles (121 square kilometers), at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City, and the fifth most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income (at $160,749) and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include SF, San Fran, The City, Frisco, and Baghdad by the Bay.

San Francisco and the surrounding San Francisco Bay Area are a global center of economic activity and the arts and sciences, spurred by leading universities, high-tech, healthcare, FIRE, and professional services sectors. As of 2020, the metropolitan area, with 6.7 million residents, ranked 5th by GDP ($874 billion) and 2nd by GDP per capita ($131,082) across the OECD countries, ahead of global cities like Paris, London, and Singapore. San Francisco anchors the 13th most populous metropolitan statistical area in the United States with 4.6 million residents, and the fourth-largest by aggregate income and economic output, with a GDP of $669 billion in 2021. The wider San Jose–San Francisco–Oakland, CA Combined Statistical Area is the fifth most populous, with 9.5 million residents, and the third-largest by economic output, with a GDP of $1.25 trillion in 2021. In the same year, San Francisco proper had a GDP of $236.4 billion, and a GDP per capita of $289,990. San Francisco was ranked seventh in the world and third in the United States on the Global Financial Centres Index as of March 2022.

During the four dynasties of Jin, Yuan, Ming and Qing dynasties, it was changed to Jiaxian in the Republic of China and Jiaxian in September 1964. It is located on the west bank of the middle reaches of the Yellow River in northeastern Shaanxi Province, southeast of Yulin City, and on the southeast edge of Maowusu Sandy Land. It is bordered by Mizhi County in the west, Wubao County in the south, Shenmu County in the north, Suide County in the southwest and Yuyang District in the northwest. It has jurisdiction over 12 towns and one street, with a county area of 2144 square kilometers, 43000 hectares of arable land, and a registered population of 269700 (2017). Mung beans are exported to Japan and other countries. There are Jiayu, Jiami and Jiawu three trunk highways connected with the county branch roads and the newly built Taijia and Yujia expressways. There are Baiyun Mountain Temple, Xianglu Temple, Yunyan Temple and other famous landscapes. September 25, 2018, access to business
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