Guam: Facts & Stats

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Last Updated: Dec 25, 2025

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Head Of Government	Governor: Lou Leon Guerrero
Capital	Hagåtña (formerly Agana)
Population	(2025 est.) 151,000
Currency Exchange Rate	1 US dollar equals 0.860 euro
Head Of State	President of the United States: Donald Trump
Official Languages	Chamorro; English
Official Religion	none
Official Name	Guåhan (Chamorro); Territory of Guam (English)
Total Area (Sq Km)	561
Total Area (Sq Mi)	217
Monetary Unit	United States dollar (U.S.$)
Population Rank	(2025) 193
Population Projection 2030	148,400
Density: Persons Per Sq Mi	(2025) 722.5
Density: Persons Per Sq Km	(2025) 279.1
Urban-Rural Population	Urban: (2024) 95.2% • Rural: (2024) 4.8%
Life Expectancy At Birth	Male: (2022) 75.1 years • Female: (2022) 80.1 years
Literacy: Percentage Of Population Age 15 And Over Literate	Male: 100% • Female: 100%
Gni Per Capita (U.S.$)	(2009) 24,446
Political Status	self-governing, organized, unincorporated territory of the United States with one legislative house (Guam Legislature [15])
Gni: (U.S.$ ’000,000)	(2009) 4,491