The map above shows Guam and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Guam vs Japan Geography
Land area
- Guam has a land area of 210 square miles (544 km²), while Japan has 140,752 square miles (364,546 km²).
- Japan's land area is 670.1 times larger than Guam's.
Total area
- Guam: 210 square miles (544 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water.
- Japan's total area is 694.8 times larger than Guam's.
Length
- Guam is 27 miles (43 km) long from north to south; Japan is 1,557 miles (2,505 km).
- Japan's north-south length is 57.7 times longer than Guam's.
Width
- Guam spans 22 miles (35 km) east to west; Japan spans 1,568 miles (2,524 km).
- Japan's east-west width is 71.3 times wider than Guam's.
Highest point
- Guam's highest point is Mount Lamlam at 1,332 feet (406 m); Japan's is Mount Fuji at 12,388 feet (3,776 m).
- Mount Fuji is 11,056 feet higher than Mount Lamlam.
Lowest point
- Guam's lowest point is Pacific Ocean at 0 feet; Japan's is Hachirogata at -13 feet.
- Japan's lowest point is 13 feet lower.
Guam vs Japan Population and History
Population
- Guam has a population of 153,836 (2020), while Japan has 122,680,000 (2026).
- Japan's population is 797.5 times larger than Guam's.
Population density
- Guam: 732.6 people per square mile vs Japan: 871.6.
- Japan's population density is 1.2 times (19%) higher than Guam's.
History
- Guam: A US territory since 1898.
- Japan: An independent state for over two millennia; the current constitution dates from 1947.
- In its current form, Japan is the older of the two by 1,238 years.
Official Websites
Guam official website · Japan official website
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More Size Comparisons
All Guam size comparisons · All Japan size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.