Oshima Province

Oshima Province (渡島国, Oshima-no kuni) was a short-lived province located in Hokkaidō. It corresponded to the southern part of today's Oshima and Hiyama Subprefectures


After 1869, the northern Japanese island was known as Hokkaido;[1] and regional administrative subdivisions were identified, including Oshima Province.[2]

  • August 15, 1869 Oshima Province established with seven districts
  • 1872 Census reports 75,830 inhabitants of the province
  • July, 1881 Tsugaru District and Fukushima District merged to form Matsumae District, reducing the number of districts to six.
  • 1882 Provinces dissolved in Hokkaidō.


  • Kameda (亀田郡, -gun))
  • Kayabe (茅部郡)
  • Kamiiso (上磯郡)
  • Fukushima (福島郡), merged with Tsugaru District in 1881 to form Matsumae District
  • Tsugaru (津軽郡), merged with Fukushima District in 1881 to form Matsumae District
  • Hiyama (檜山郡)
  • Nishi (爾志郡)



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

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