City size comparison

compared to

Montreal is about 6 times bigger than Boulder.

Boulder is approximately 70 sq km, while Montreal is approximately 432 sq km, making Montreal 520% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Montreal uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Montreal vs. Boulder

Flip Comparison · See true size
See Montreal on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 74.2% more expensive than Montreal
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