Haw. Rev. Stat. § 171-9: Land districts.

For the purposes of this chapter the State is divided into the following land districts:

First land district: The island of Hawaii and the reefs and reef lands off the shores of the island of Hawaii.

Second land district: The islands of Maui, Molokai, Lanai, Kahoolawe, and Molokini and the reefs and reef lands off the shores of these islands.

Third land district: The island of Oahu and all other islands and reefs in the State of Hawaii not included in the other districts.

Fourth land district: The islands of Kauai, Niihau, Lehua, and Kaula, and the reefs and reef lands off the shores of these islands.