• San Francisco
  • Huaiyuan 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.

Huaiyuan County belongs to Bengbu City, Anhui Province. It is located in the north of Anhui Province, the middle reaches of the Huaihe River, the southern end of the Huaibei Plain, Guzhen, Bengbu and Fengyang to the east, Huainan to the south, Fengtai and Mengcheng to the west, and Hanxi and Suzhou to the north. It is between 116o 45km east longitude 11709' and 32o 43km north latitude 33 °19', with a total area of 2391.02 square kilometers. Huaiyuan County was founded from the Yuan Dynasty to the 28th year of the Yuan Dynasty (1291), known as the "Pearl on the Huaihe River" reputation, popular folk flower drum lanterns, places of interest are Bailuquan, Bian Hedong, Wanghe Tower and so on. In August 2018, the Anhui provincial government approved Huaiyuan County to withdraw from the poverty-stricken county. In 2018, Huaiyuan County has jurisdiction over 15 towns and 3 townships, with 1 farm and 2 development zones, achieving a GDP of 319. 5%.
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