Within the last few years, at least two large ethnic food markets have opened in Staten Island, one pan-Asian (HL Mart) the other Middle Eastern (Mekkah Mart).
This reflects the population changes here, with a marked influx of Chinese, Albanians and Turks. We also have a sudden explosion of Turkish restaurants.
Sociologically, this is irritating some Italian-Americans who believe this is "their" island. They have been for decades a large bloc, but their proportion is declining.
I've been to the Asian market a few times. I just discovered the Middle Eastern one yesterday; they have an amazing panoply of foods. Palestinian olive oil, in gallon tins, even! Lebanese too.
A lot of Mexicans have settled in, and they have their markets too, but they tend to be little places, nothing like the others I mentioned. The Sri Lankan population has 2 or 3 of its own small markets too, and a few restaurants.
I'm enjoying the availability of these varied foodstuffs for my cooking, even if I only understand how to use a fraction of the offerings.