Country size comparison

compared to

Guam is about 1.6 times smaller than San Diego.

San Diego is approximately 844 sq km, while Guam is approximately 544 sq km, making Guam 64.45% the size of San Diego.
Tip: This to-scale comparison of San Diego vs. Guam uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Guam vs. San Diego
Flip Comparison · See true size
See Guam on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 26.1% more expensive than Guam overall
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