is an organized, unincorporated territory of the United States in Micronesia in the western Pacific Ocean. It is the westernmost point and territory of the United States, along with the Northern Mariana Islands. The capital city of Guam is Hagåtña and the most populous city is Dededo. Guam has been a member of the Pacific Community since 1983. The inhabitants of Guam are called Guamanians, and they are American citizens by birth. The indigenous Guamanians are the Chamorros, who are related to other Austronesian natives of Eastern Indonesia, the Philippines, and Taiwan.