As others have said here, I feel there are 2 islands (well, at least 2...who knows if there are other ones...) but that the little one that they have Sawyer, Kate, and Jack on now is not the one where the Others village is. This one is too small to be where the village is. Seems like it was a zoological site, with the Hydra station and the cages and stuff. I'd guess there's not much else on it.