The Islands of Furness are situated to the south-west and east of the Furness Peninsula. Within England, they are the third biggest collection of islands. They are generally quite small, though at 12.99 km² Walney Island is the eighth biggest in England. Of these, only Walney Island, Barrow Island, Roa Island and Piel Island are inhabited. The majority of the islands lie within the boundary of the Borough of Barrow-in-Furness, with some 15,000 residents constituting 20% of the district's population.