The Fiftieth American State is Hawaii, which has 6 letters. Hawaii is an archipelago located in the Central Pacific Ocean and is the only U.S. state located outside of North America. It is the northernmost island group in Polynesia and is the only state composed entirely of islands. Hawaii is known for its tropical climate, diverse natural scenery, and active volcanoes. It is also home to a wide variety of wildlife and is a popular destination for tourists.