Have you ever been to New York City? It has the largest population of people in one city!
Not really, but what is the population size
In 2016 it was estimated to have over 8,537,673 people, so that number could be much more in such a densely populated area.
OK, what a large city. What is their cultural value?
New York City has such a diverse population that contributes to the world's financial, cultural, and media outlets. 
Wow, that is cool. Is like their system of education is good too
spoken in New York, making it the most linguistically diverse city in the world. New York City is home to more than 3.2 million residents born outside the United States, the largest foreign-born population of any city in the world. , the New York metropolitan area is estimated to produce a gross metropolitan product (GMP) of US$1.9 trillion. If greater New York City were a sovereign state, it would have the 12th highest GDP in the world. New York is home to the highest number of billionaires
According to the , it has a population of people making it as the 17th-largest city in the country and ranked as the 41st most densely populated city in the world with 19,336 inhabitants per square kilometer. Although its population is just half a million, the daytime population of the city is estimated to be more than one million during a typical working day because of the large number of people who go to the city to work, shop, and do business. Traffic is expected mostly during rush hour and holiday seasons.