Hertsön
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This article is about the island. For for the Luleå district, see Hertsön (district).
Hertsön is a Swedish island in the Bothnian Bay, largely occupied by the eastern districts of the city Luleå. Due to land elevation, the islands Svartön, Mulön, Granön and Björkön has merged into the island. The size of the island is around 73 km², making it the twelvth largest island in Sweden.