• San Francisco
  • rang tang 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.

Rangtang is located in longitude 100 °31 °29'E and latitude 31 °29 °32 °41 °N, in the east of the Qinghai-Tibet Plateau, in the upper reaches of the Dadu River, in the west of Aba Tibetan and Qiang Autonomous Prefecture in Sichuan Province, bordering Malkang City and Aba County in the east and northeast, Jinchuan County in the south, Seda County, Luhuo County and Daofu County in Ganzi Prefecture in the west and south, and Banma County in Qinghai Province in the north. The county seat is 3285 meters above sea level. Rangtang was founded in 1958. The name of the county comes from a natural village in the country. The village is located on the mountain, and its mountain is shaped like the "Tibetan Bhara Bodhisattva". The Tibetan-Chinese Dictionary: "Zhanbala, enlightened by free translation." The Sanskrit sound is translated into Yan Bora. The old translation is Bulu King Kong, the name of the God of Wealth. The Dictionary of Tibetan-Chinese University is recorded again: "Building, treasure building, victory building." A symbol on the roof of the palace
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