Northern Mariana Islands Government US Unincorporated Territory in free association with the United States Capital Saipan Population 56 608 Land area 457 km² Max height above sea level 965 m EEZ 749 268 km² GDP Year 2020 Currency US dollar Languages English Chamorro Carolinian GDP per capita 23 550 USD Useful links Commonwealth of the Northern Mariana Islands: Office of the Governor Welcome to the Northern Mariana Islands Pacific Community Membership 1983