Country size comparison

compared to

San Diego is about 1.6 times bigger than Guam.

Guam is approximately 544 sq km, while San Diego is approximately 844 sq km, making San Diego 55% larger than Guam.
Tip: This to-scale comparison of Guam vs. San Diego uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Diego vs. Guam
Flip Comparison · See true size
See San Diego on top of Guam
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Cost of Living Comparison · 7 categories - 2026 data
Guam is 4.0% cheaper than San Diego
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