Guam Government About PICTs - GovernmentUS Unincorporated Territory Capital About PICTs - CapitalHagatna Population Mid-year population estimate179,900 2022 Land area Land area540 km² Max height above sea level About PICTs - Max height above sea level406 m EEZ area About PICTs - EEZ area221,504 km² Currency About PICTs - CurrencyUS dollar (USD) Languages About PICTs - LanguagesEnglish. Chamorro GDP per capita (USD) Gross Domestic Product per capita$33,080 2020 Useful links Guam.gov: Official portal for the Island of Guam Guam Visitors Bureau Guam Economic Development Authority Pacific Community Membership About PICTs - Pacific Community Membership1983