Northern Mariana Islands

Northern Mariana Islands, also called Northern Marianas, officially Commonwealth of the Northern Mariana Islands, a self-governing commonwealth in association with the United States. It is composed of 22 islands and islets in the western Pacific Ocean. The commonwealth is a part of the Mariana Islands, a chain of volcanic mountain peaks and uplifted coral reefs. (The Marianas chain also includes the politically separate island of Guam, to the south.)

Northern Mariana Islands

Saipan (46.5 square miles [120 square km]), Tinian (39 square miles [101 square km]), and Rota (33 square miles [85 square km]) are the principal islands and, together with Anatahan, Alamagan, and Agrihan, are inhabited. Another island, Pagan, was evacuated in 1981 after a severe volcanic eruption there. The capital is on Saipan.