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Guam Geography - 2024


GEOGRAPHICAL NAMES  Spanish Simplified Chinese French German Russian Hindi Arabic Portuguese


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

Geographic coordinates

13 28 N, 144 47 E

Map references



total: 544 sq km

land: 544 sq km

water: 0 sq km

Area - comparative

three times the size of Washington, DC

Land boundaries

total: 0 km


125.5 km

Maritime claims

territorial sea: 12 nm

exclusive economic zone: 200 nm


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


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 2024 World Fact Book of the United States Central Intelligence Agency and other sources. No claims are made regarding the accuracy of Guam 2024 information contained here. All suggestions for corrections of any errors about Guam 2024 should be addressed to the CIA or the source cited on each page.

This page was last modified 04 May 24, Copyright © 2024 ITA all rights reserved.