Iwashiro Province

Iwashiro Province (岩代国, Iwashiro-no kuni) is an old province in the area of Fukushima Prefecture.[1] It was sometimes called Ganshū (岩州).

Map of the former Japanese provinces with Iwashiro highlighted

The province occupies the western half of the central part of Fukushima Prefecture; the eastern half is Iwaki Province. More precisely, Date and Adachi districts in the north belong to Iwashiro and Higashishirakawa and Nishishirakawa districts in the south belong to Iwaki. The border between the two provinces is the Abukuma River. The former ichinomiya of the province is Isasumi Shrine.


  • On December 7, 1868, the province was formed out from Mutsu Province. As of 1872, the population was 427,933.

Historical districtsEdit

See alsoEdit



  • Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128

Other websitesEdit

  Media related to Iwashiro Province at Wikimedia Commons