Guam at its true size

Guam covers 544 km², number 193 of 235 by area. Home to 168,999 people (2025). Sitting near the equator, it is one of the few places Mercator gets almost right.

Equal-area projection · Natural Earth 50m
Area544 km² Wikidata
Population168,999 World Bank, 2025
Density311 per km²
CapitalAgana
RegionMicronesia, Oceania
StatusTerritory of United States of America
CoastHas a coastline
CodesGU · GUM · 316

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How many times does Guam fit into…

Questions about Guam

How big is Guam?
Guam covers 544 km², which makes it number 193 of 235 countries and territories by area. About 168,999 people live there (2025), 311 per km².
Is Guam bigger than Saint Lucia?
Guam is 12% smaller than Saint Lucia. Guam: 544 km²; Saint Lucia: 617 km².
How much does the Mercator map distort Guam?
Guam lies close to the equator, so Mercator draws it at nearly its true size. It is the countries far from the equator that Mercator inflates.
Does Guam have land borders?
No. Guam has no land neighbours; every border is a coastline.