City size comparison

compared to

Boulder is about 1.5 times smaller than Paris.

Paris is approximately 105 sq km, while Boulder is approximately 70 sq km, making Boulder 66.05% the size of Paris.
Tip: This to-scale comparison of Paris vs. Boulder uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boulder vs. Paris

Flip Comparison · See true size
See Boulder on top of Paris
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Cost of Living Comparison · 7 categories - 2026 data
Paris is 10.6% more expensive than Boulder
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