[3] Tochigi Prefecture Per Japanese census data,[4][5] the population of Haga has declined in recent decades.

Ubagai, Minatakazeawa and Mizuhashi villages were created within Haga District on 1 April 1889 with the creation of the modern municipalities system.

[citation needed] Haga has a mayor-council form of government with a directly elected mayor and a unicameral town council of 13 members.

In terms of national politics, the town is part of Tochigi 4th district of the lower house of the Diet of Japan.

Major companies located at Haga-machi industrial complex include:[7] Haga has three public primary schools and one public middle school operated by the town government.