| Hachijō Subprefecture | |
| Native Name Lang: | ja |
| Official Name: | Hachijō-shichō |
| Mapsize: | 200px |
| Seat: | Hachijō |
| Seat Type: | Capital |
| Subdivision Type: | Prefecture |
| Subdivision Name: | Tokyo Metropolis |
| Area Total Km2: | 78.6 |
| Population Total: | 8,790 |
| Population As Of: | October 1, 2023 |
| Population Density Km2: | auto |
| Website: | Official website |
is a subprefecture of Tokyo Metropolis, Japan. The organization of government belongs to the Tokyo Metropolitan Government Bureau Of General Affairs.
The subprefecture has an area of 78.6 square km. It is located within the Izu Islands and is 200km away from Mainland Japan.
| Romanji | Kanji | Area (Km²) | Population | Type | Island(s) | Map | |
|---|---|---|---|---|---|---|---|
| Hachijō | 八丈町 | 72.24 | 7,056 | Town | Hachijō-jima and Hachijō-kojima | ||
| Aogashima | 青ヶ島村 | 5.96 | 169 | Village | Aogashima |
Additionally, Hachijō includes the four southernmost Izu Islands, which are uninhabited. These islands currently do not belong to any municipality; both Hachijō and Aogashima claim administrative rights. From north to south, the islands are:
Among the islands of the subprefecture, only Hachijōjima and Aogashima are inhabited.
In 2023, Hachijō Subprefecture had a population of 8,790. The village of Aogashima is the least populated municipality in all of Japan, with only 169 residents[1]
The Hachijō language, also called Shima Kotoba, is spoken exclusively on the two main islands. It is an endangered language, with 0 native speakers being children or young adults.[2]