City size comparison

compared to

Amsterdam is about 2.4 times bigger than Boulder.

Boulder is approximately 70 sq km, while Amsterdam is approximately 166 sq km, making Amsterdam 138% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Amsterdam uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Amsterdam vs. Boulder

Flip Comparison · See true size
See Amsterdam on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 10.0% cheaper than Amsterdam
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