City size comparison

compared to

New York City is about 11 times bigger than Boulder.

Boulder is approximately 70 sq km, while New York City (including all five boroughs: Manhattan, Brooklyn, Queens, The Bronx, and Staten Island) is approximately 781 sq km, making New York City 1,022% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. New York City uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: New York City vs. Boulder

Flip Comparison · See true size
See New York City on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 22.3% cheaper than New York City
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