Hachijō covers the islands of Hachijō-jima and Hachijō-kojima, two of the islands in the Izu archipelago in the Philippine Sea, 228 kilometres (142 mi) south of central Tokyo.

Warmed by the Kuroshio Current, the town has a warmer and wetter climate than central Tokyo.

This practice ended in the Meiji period, and the island residents developed an economy based on fishing, sericulture, and agriculture.

Hachijō Subprefecture was organized on April 1, 1908, and included the villages of Mitsune, Nakanogo, Kashitate, Sueyoshi and Ōkago.

However, in March 1966, the residents of Hachijōkojima voted to abandon their island, citing the inaccessibility of basic public services and economic difficulties, and Hachijōkojima became a deserted island from June 1969.