Björkö (Korsholm)
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Björkö (Korsholm) is an island in Korsholm municipality (Finnish: Mustasaari), Finland. It is situated in the Kvarken area of the Gulf of Bothnia. The chief settlement is called Björköby. In addition to the main island Björkö includes 350 skerries and the total area is 72 km2.

