However, at the time of designation as tosho (islands) in 1889, Shimane Prefecture abolished the four counties and established the Oki island government, and "Toshi" (governor of the island government) took charge of public administration.
しかし、1889年の島嶼指定により島根県は4郡を廃止して隠岐島庁を設置、「島司」が行政に当たった。