[2] Per Japanese census data,[3] the population of Shichinohe peaked around 1960 and has declined over the past 60 years.

Shichinohe began as one of a series of numbered fortified settlements established by the Nanbu clan in the early Kamakura period to control their new territories in Nukada District of northern Ōshū.

During the post-Meiji restoration establishment of the modern municipalities system on 1 April 1889, Shichinohe Village was incorporated.

[4] Shichinobe has a mayor-council form of government with a directly elected mayor and a unicameral town council of 16 members.

In terms of national politics, the town is part of Aomori 2nd district of the lower house of the Diet of Japan.