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  • Jian'an District

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.

Jian'an District is the municipal district of Xuchang City, Henan Province, which is located in the middle of Xuchang City, Henan Province, surrounded by Weidu District of Xuchang City, Mianling County to the east, Yuzhou City to the west, Linying County to the south and Changge City to the north. The geographical coordinates are 113 °35 °east longitude 114 °04 'and 33 °52 °34 °10' north latitude. Jian'an District has a total area of 1090 square kilometers. in 2015, the total output value of Jian'an District was 24.306 billion yuan, an increase of 9.6% over the same period in 2015. In 2017, Jian'an District has jurisdiction over 16 township offices with a total population of 1.3076 million. Jian'an District is the national advanced area of scientific and technological progress, the first batch of key areas of opening up to the outside world, the advanced area of developing export-oriented economy, the national important processing and export base of hair products, and the production base of automobile transmission shaft. Jian'an District was selected in 2018.
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