The subprefecture covers 78.6 square km and 8790 people.
Additionally, the subprefecture includes the following uninhabited islands, which are the four southernmost Izu Islands. These islands currently do not belong to any municipality, because both Hachijō and Aogashima claim administrative rights, from north to south:
Among the islands of the subprefecture, only Hachijōjima and Aogashima are inhabited.
See also 
- (Japanese) Official website
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