| • Total
||3,936.32 km2 (1,519.82 sq mi)
|Population (March 2009)
| • Total
| • Density
||110/km2 (300/sq mi)
Oshima (渡島総合振興局 Oshima-sōgō-shinkō-kyoku) is a subprefecture of Hokkaido Prefecture, Japan. As of 2004 it had a population of 456,621 and an area of 3,715.38 km².
Hakodate Airport is located in the City of Hakodate.
Hokkaido Government Oshima Subprefectural Office in Hakodate
Towns and villages by district
- 1897 Hakodate Subprefecture, Kameda Subprefecture, and Matsumae Subprefecture was established.
- 1899 Hakodate Subprefecture was abolished. Kameda Subprefecture was transfered to Hakodate and renamed Hakodate Subprefecture.
- 1903 Matsumae Subprefecture was merged into Hakodate Subprefecture.
- 1922 Hakodate Subprefecture changed its name to Oshima Subprefecture.
41°49′11″N 140°45′12″E / 41.819755°N 140.753278°ECoordinates: 41°49′11″N 140°45′12″E / 41.819755°N 140.753278°E 41°25′45″N 140°06′41″E / 41.429146°N 140.111361°E(Matsumae General Branch Office)