City size comparison

compared to

Boulder is about 21 times smaller than Saint Petersburg.

Saint Petersburg is approximately 1,439 sq km, while Boulder is approximately 70 sq km, making Boulder 4.84% the size of Saint Petersburg.
Tip: This to-scale comparison of Saint Petersburg vs. Boulder uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boulder vs. Saint Petersburg

Flip Comparison · See true size
See Boulder on top of Saint Petersburg
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Cost of Living Comparison · 7 categories - 2026 data
Saint Petersburg is 54.0% cheaper than Boulder
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