Unincorporated Territory (USA) American Samoa AS An unincorporated territory of the United States located in the South Pacific Ocean, southeast of the sovereign State of Samoa. The main (largest and most populous) island is Tutuila, with the Manu'a Islands, Rose Atoll, and Swains Island also included in the territory. GAZ GAZ:00003957 GNISID:01802701 INCITS38:60 ISO3166-1:016 ISO3166-1:AS ISO3166-1:ASM ISO3166-2:AS ISO3166-2:US-AS Unincorporated Territory (USA) American Samoa AS An unincorporated territory of the United States located in the South Pacific Ocean, southeast of the sovereign State of Samoa. The main (largest and most populous) island is Tutuila, with the Manu'a Islands, Rose Atoll, and Swains Island also included in the territory. GAZ GAZ:00003957 GNISID:01802701 INCITS38:60 ISO3166-1:016 ISO3166-1:AS ISO3166-1:ASM ISO3166-2:AS ISO3166-2:US-AS Samoan Archipelago