The largest island in Hawaii is called Hawaii Island; it is also referred to as the Big Island. It covers 4,028 square miles, and it is the largest island that is part of the United States.
Hawaii Island is the most recently formed island in Hawaii. It was formed by volcanic activity, and it is the only island of Hawaii that still has active volcanoes.
The state of Hawaii includes over 100 islands. Only seven of them are inhabited, including Hawaii Island, Maui, Oahu, Kauai, Molokai, Lanai and Niihau. Niihau is the smallest inhabited island and, as of 2009, had 130 residents.