• San Francisco
  • Chongxin 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.

Chongxin County is located in the east of Pingliang City, bordered by Jingchuan and Lingtai counties to the east, Huating County to the west, Kongtong District to the north, and Longxian County, Shaanxi Province to the south, between 35 °1 Latitude 35 °25 °N and 106 °50 °E, 107 °10'. The total land area is 850km2, with a width of 35km from east to west and 41.5km from north to south. The climate is warm and semi-arid continental climate zone. It is cold and dry in winter and spring, warm and rainy in summer and autumn, with an annual average temperature of 10.7km2, sunshine of 2296 hours, rainfall of 400ml / 500mm and frost-free period of about 190days. In February 2018, Chongxin County had jurisdiction over 4 towns, 2 townships, 1 industrial concentration area, 1 urban community management committee, 79 administrative villages and 410 cooperatives, with a total population of 103500, including agriculture.
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