Guam Geography 2023, CIA World Factbook

Oceania, island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the Philippines

Area

total: 544 sq km

land: 544 sq km

water: 0 sq km

Maritime claims

territorial sea: 12 nm

exclusive economic zone: 200 nm

Climate

tropical marine; generally warm and humid, moderated by northeast trade winds; dry season (January to June), rainy season (July to December); little seasonal temperature variation

volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water), with steep coastal cliffs and narrow coastal plains in north, low hills in center, mountains in south

Elevation

highest point: Mount Lamlam 406 m

lowest point: Pacific Ocean 0 m

Natural resources

aquatic wildlife (supporting tourism), fishing (largely undeveloped)

Land use

agricultural land: 33.4% (2018 est.)

arable land: 1.9% (2018 est.)

permanent crops: 16.7% (2018 est.)

permanent pasture: 14.8% (2018 est.)

forest: 47.9% (2018 est.)

other: 18.7% (2018 est.)

Irrigated land

2 sq km (2012)

Population distribution

no large cities exist on the island, though large villages (municipalities) attract much of the population; the largest of these is Dededo

Natural hazards

frequent squalls during rainy season; relatively rare but potentially destructive typhoons (June to December)

Geography - note

largest and southernmost island in the Mariana Islands archipelago and the largest island in Micronesia; strategic location in western North Pacific Ocean

NOTE: The information regarding Guam on this page is re-published from the 2023 World Fact Book of the United States Central Intelligence Agency and other sources. No claims are made regarding the accuracy of Guam 2023 information contained here. All suggestions for corrections of any errors about Guam 2023 should be addressed to the CIA or the source cited on each page.

Guam Geography - 2023

Location

Geographic coordinates

Map references