City size comparison

compared to

Paris is about 1.5 times bigger than Boulder.

Boulder is approximately 70 sq km, while Paris is approximately 105 sq km, making Paris 51% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Paris uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Paris vs. Boulder

Flip Comparison · See true size
See Paris on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 13.4% more expensive than Paris
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