Hello dear, have you been to The City of New York, often called New York City or simply New York,  
Yes I have, many times.  I love it. 
is the most populous city in the United States.
Really?  How many people live there?
With an estimated 2016 population of 8,537,673
Ok, that is a lot.  No wonder why property there is so expensive.
New York City is also the most densely populated major city in the United States.
How so?  How many people per square feed live there or something?
landmass and one of the world's most populous megacities, with an estimated 19,979,477 people in its 2018 Metropolitan Statistical Area and 22,679,948 residents in its Combined Statistical Area. A global power city, New York City has been described as the cultural, financial, and media capital of the world, and exerts a significant impact upon commerce, entertainment, research, technology, education, politics, tourism, art, fashion, and sports. The city's fast pace has inspired the term "New York minute". Home to the
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Two-thirds of New York State's population resides in New York City Metropolitan Area. New York City is the most populous city in the United States, with an estimated record high population of 8,550,405 in 2015, incorporating more immigration into the city than emigration since the 2010 United States Census. At least twice as many people live in New York City as in the second-most populous U.S. city (Los Angeles), and within a smaller area. Long Island alone accounted for a Census-estimated 7,838,722 residents