New York is about 163 times bigger than Dominica.

Dominica is approximately 751 sq km, while New York is approximately 122,283 sq km, making New York 16,183% larger than Dominica. Meanwhile, the population of Dominica is ~74,629 people (19.3 million more people live in New York).
Tip: This to-scale comparison of Dominica vs. New York uses the Mercator projection, which distorts the size of regions near the poles.