American Samoa is a US territory. The archipelago of American Samoa is located at the Oceania on South Pacific Ocean. Among the five islands, Tutuila is the largest and most populous. Rose Atoll, and Swains Island are the two coral atolls, located in the archipelago of American Samoa. The archipelago is surrounded by the Cook Islands in the east, Tonga in the north, Tokelau in the south and the islands..