Hatteras Island (historically, Croatoan Island) is a barrier island located off the North Carolina coast. Dividing the Atlantic Ocean and the Pamlico Sound, it runs parallel to the coast, forming a bend at Cape Hatteras. It is part of North Carolina's Outer Banks and includes the towns of Rodanthe, Waves, Salvo, Avon, Buxton, Frisco, and Hatteras. It contains the largest part of the Cape Hatteras National Seashore. It is almost entirely in Dare County, North Carolina, but there is a very small sliver of about which extends southwest into Hyde County.