City size comparison

compared to

Madrid is about 2.7 times bigger than Boise.

Boise is approximately 221 sq km, while Madrid is approximately 604 sq km, making Madrid 174% larger than Boise.
Tip: This to-scale comparison of Boise vs. Madrid uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Madrid vs. Boise

Flip Comparison · See true size
See Madrid on top of Boise
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Cost of Living Comparison · 7 categories - 2026 data
Boise is 17.6% more expensive than Madrid
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