City size comparison

compared to

Warsaw is about 7 times bigger than Boulder.

Boulder is approximately 70 sq km, while Warsaw is approximately 517 sq km, making Warsaw 643% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Warsaw uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Warsaw vs. Boulder

Flip Comparison · See true size
See Warsaw on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 56.7% more expensive than Warsaw
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