<Tr> <Th> GNIS feature ID </Th> <Td> 1848160 </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.oakislandnc.com </Td> </Tr> <P> Oak Island is a seaside town located mostly on the barrier island of Oak Island (which also contains the town of Caswell Beach), in Brunswick County, North Carolina, United States . The town extends onto the mainland north of the island's bridge . The population was 6,783 at the 2010 census . It was founded in 1999 by the consolidation of the towns of Long Beach and Yaupon Beach . Its main industry is tourism; the town has an average summer population of 30 - 50,000 . </P> <P> Oak Island is part of the Myrtle Beach metropolitan area . </P>

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