What is the name of the large island that is part of New York?

Paumonauk

I think its Ellis Island

You may mean Long Island.

Ellis Island is much smaller. Paumonauk is the Native American name for Long Island.

It's Long Island. I live in New York.

The name of the large island that is part of New York is Long Island. To find this answer, you can conduct a simple internet search using any search engine or reference website. By typing "large island in New York," "islands in New York," or a similar query, you will quickly find the name of the island. Additionally, you can consult maps or atlases that depict the geography of New York to identify the large island in question.