Saipan is the largest island of the Northern Mariana Islands, a commonwealth of the United States in the western Pacific Ocean. According to 2017 estimates by the United States Census Bureau and the Commonwealth's Department of Commerce, Saipan's population was 47,565.The legislative and executive branches of Commonwealth government are located in the village of Capitol Hill on the island; the judicial branch is headquartered in the village of Susupe. Since the entire island is organized as a single municipality, most publications designate Saipan as the Commonwealth's capital. As of 2015, Saipan's mayor is David M. Apatang and the governor of the Northern Mariana Islands is Ralph Torres.