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Sashima (猿島郡 Sashima-gun) is a district located in Ibaraki Prefecture, Japan.
Following the Bandō merger but with 2004 population data, the district has an estimated population of 125,153 and a density of 726 persons per km². The total area is 172.25 km².
Towns and villages
- On March 22, 2005, the town of Sashima merged with the neighboring city of Iwai forming the city of Bandō.
- On September 12, 2005, the towns of Sanwa and Sōwa merged into the city of Koga.