The US Island Territory crossword solutions are Guam (4 letters) and Samoa (5 letters). Guam is an unincorporated and organized territory of the United States located in the western Pacific Ocean. It is the largest and southernmost of the Mariana Islands and is the largest island in Micronesia. Samoa is an independent nation composed of two main islands, Savai'i and Upolu, and four smaller islands. It is located in the South Pacific Ocean, about halfway between Hawaii and New Zealand. Both Guam and Samoa have close ties to the United States, with Guam being a US territory and Samoa having a Compact of Free Association with the US.