Ni'ihau [nee-ee-how] is the western and northernmost island of the 8 main isles.
The Island of Hawaii (Big Island) is the furthest south, with "South Point" on the Big Island being the southern-most point of the 50 United States.
Kauai
Kauai is the oldest and northern most INHABITED island in the Hawaiian chain which includes more than 1000 small islands and atolls to the northwest of Kauai.
Hawaiian Islands
Oahu
Oahu is the most populous of the Hawaiian Islands, home to the state capital, Honolulu, and the largest city in Hawaii.
Kahoolawae the smallest of the "main" islands and a US Navy target range until 1990, it has no permanent residents. Niihau is privately owned. Hawaii the largest of the Hawaiian Islands. Oahu the most heavily populated of the Hawaiian Islands.
They were once called the "Sandwich Islands" after the Earl of Sandwich.
I'm thinkin Oahu.
Hawaii is more Northern than Southern, although some people call it Central Pacific.
Hawaiian Islands
Hawaiian Islands Invitational was created in 2011.
Regionally the Hawaiian Islands are a part of Polynesia.
The Hawaiian islands are made up of many volcanoes, most of which are extinct. However, one volcano, Kilauea on the big island, is one of the most active volcanoes in the world.