City size comparison

compared to

Boulder is about 77 times smaller than Istanbul.

Istanbul is approximately 5,343 sq km, while Boulder is approximately 70 sq km, making Boulder 1.3% the size of Istanbul.
Tip: This to-scale comparison of Istanbul vs. Boulder uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boulder vs. Istanbul

Flip Comparison · See true size
See Boulder on top of Istanbul
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Cost of Living Comparison · 7 categories - 2026 data
Istanbul is 44.8% cheaper than Boulder
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