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.