Hawaii is an island state of the United States, in the Pacific Ocean, situated a little more than 3,600 kilometres (2,250 miles) southwest of the US mainland. It is one of the two non-contiguous US states; it is the only state not on the North American mainland, the only state that is an archipelago, and the only state in the tropics. Hawaii was an independent republic from 1894 until 1898, when it officially became a US territory. Hawaii was admitted as a US state on 21 August 1959.

Clearly only US states on North America’s west coast (including Alaska) could be considered as near neighbours of Hawaii. The shortest distance between Hawaii and the US state of Washington is about 4,174 kilometres (2,594 miles). The distance between Hawaii and Oregon is about 3,863 km (2,383 mi). Hawaii is closer to California than either Washington or Oregon; specifically, the distance from a point near Hakalau, Hawaii to Flumeville, California is 3,674 km (2,283 mi). However, Hawaii is slightly closer still to Alaska than it is to California. The tip of the peninsula overlooking Ikatan Bay, near False Pass, Alaska is 3,636 km (2,259 mi) from a part of Tunnels Beach on the island of Kauai Hawaii.

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