The question needs to be more specific since there are at least three islands with that name.
39,772 acres.
Vancouver Island's area is 7,940,500 acres.
Alcatraz Island comprises 22 acres.
Coney Island's area is 64 acres.
Rhode Island's land area is 775,680 acres.
Ellis Island is 27.5 acres,28 if rounded
Rhode Island has a total of approximately 400,000 acres.
1,920 acres.
Catalina Island (Santa Catalina Island), California, covers an area totaling 47,987.2 acres.
Liberty Island has a surface of 59,558 square meters, or 14.717 acres.
The island of Sicily is 6,352,576 acres.
249,600 acres.