Guam

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Guam: Ethnic composition

Guam: Religious affiliation

Guam: Urban-rural

Guam: Age breakdown

Brown tree snake (Boiga irregularis) in Guam

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Guam: Facts & Stats

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

Last Updated: Jun 12, 2025

News •

Trump's military parade is a US outlier in peacetime but parades and reviews have a long history • June 12, 2025, 9:10 PM ET (AP)

Why 2 Chinese aircraft carriers are operating in the Pacific together for the first time • June 12, 2025, 3:01 AM ET (AP)

A US territory's colonial history emerges in state disputes over voting and citizenship • June 7, 2025, 12:49 PM ET (AP)

Facts

Head Of Government	Governor: Lou Leon Guerrero
Capital	Hagåtña (formerly Agana)
Population	(2022 est.) 152,600
Currency Exchange Rate	1 US dollar equals 0.937 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.$)
Population Rank	(2025) 193
Population Projection 2030	166,000
Density: Persons Per Sq Mi	(2018) 786.1
Density: Persons Per Sq Km	(2018) 303.7
Urban-Rural Population	Urban: (2018) 94.8% • Rural: (2018) 5.2%
Life Expectancy At Birth	Male: (2017) 73.6 years • Female: (2017) 78.6 years
Literacy: Percentage Of Population Age 15 And Over Literate	Male: 100% • Female: 100%
Gni Per Capita (U.S.$)	(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

Photos

Brown tree snake (Boiga irregularis) in Guam

Guam. Political/Physical map. Includes locator.

Pacific Islands

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Pacific Ocean territory island Secretariat of the Pacific Community Oceania Hagåtña Apra Harbor Battle of Guam flag of Guam English language Taiwan Iceland Puerto Rico Ireland Sri Lanka Greenland Cuba Cyprus Jamaica Madagascar

The Pacific Ocean, with depth contours and submarine features

Pacific Ocean

Oceania

Oceania

region, Pacific Ocean

Hagåtña

Hagåtña

Guam

Apra Harbor, Guam

Apra Harbor

Guam

United States

Tumon Bay

Mariana Islands

islands, Pacific Ocean

Quiz

Island, New Caledonia.

Islands and Archipelagos