The map above shows Guam and US Virgin Islands side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Guam vs US Virgin Islands Geography
Land area: Guam has a land area of 210 square miles (544 km²), while US Virgin Islands has 134 square miles (346 km²). Guam's land area is 1.6 times (57%) larger than US Virgin Islands'.
Total area: Guam: 210 square miles (544 km²) vs US Virgin Islands: 737 square miles (1,910 km²), including inland and coastal water. US Virgin Islands' total area is 3.5 times (251%) larger than Guam's.
Length: Guam is 27 miles (43 km) long from north to south; US Virgin Islands is 47 miles (76 km). US Virgin Islands' north-south length is 1.7 times (74%) longer than Guam's.
Width: Guam spans 22 miles (35 km) east to west; US Virgin Islands spans 52 miles (83 km). US Virgin Islands' east-west width is 2.4 times (136%) wider than Guam's.
Highest point: Guam's highest point is Mount Lamlam at 1,332 feet (406 m); US Virgin Islands's is Crown Mountain at 1,555 feet (474 m). Crown Mountain is 223 feet higher than Mount Lamlam.
Lowest point: Guam's lowest point is Pacific Ocean at 0 feet; US Virgin Islands's is Caribbean Sea at 0 feet. Both lowest points are at or near sea level.
Guam vs US Virgin Islands Population and History
Population: Guam has a population of 153,836 (2020), while US Virgin Islands has 87,146 (2020). Guam's population is 1.8 times (77%) larger than US Virgin Islands'.
Population density: Guam: 732.6 people per square mile vs US Virgin Islands: 650.3. Guam's population density is 1.1 times (13%) higher than US Virgin Islands'.
History: Guam: A US territory since 1898. US Virgin Islands: A US territory since 1917, purchased from Denmark. In its current form, Guam is the older of the two by 19 years.
Official Websites
Guam official website · US Virgin Islands official website
More Size Comparisons
All Guam size comparisons · All US Virgin Islands 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.