Hawaii has no islands.
Hawaii . Hawaii is the only U.S. state located in Oceania and the only one composed entirely of islands . It is the northernmost island group in Polynesia , occupying most of an archipelago in the central Pacific Ocean . The state encompasses nearly the entire volcanic Hawaiian archipelago , which comprises hundreds of islands spread over 1500 mi . The archipelago is physiographically and ethnologically part of the Polynesian subregion of Oceania .