New York is the largest and most populated city in the United States, and the coronavirus tends to spread in areas that may be overcrowded or highly populated. There are over eight million people in New York City, which has the highest number of confirmed cases of the coronavirus.
In New York, people are generally packed together like sardines in a can, especially on the subway. Many people in New York do not have cars that would help to minimize such close contact with others. There are always large swarms of people on the sidewalks, often bumping into each other.
People live in crowded apartment buildings, squeezing into elevators with their neighbors. Another reason why New York has so many coronavirus cases is that they are finding it in people through rigorous testing, as the state has authorized a plethora of public and private labs.