Mitsuishi District, Hokkaido

Mitsuishi (三石郡, Mitsuishi-gun^?) was a district located in Hidaka Subprefecture, Hokkaido, Japan.

As of 2004, the district had an estimated population of 4,950 and a density of 14.30 persons per km². The total area was 346.23 km².

On March 31, 2006, Mitsuishi District merged with Shizunai District to create the new Hidaka District. Mitsuishi District and Shizunai District were both dissolved with this merger.

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