City size comparison

compared to

Saint Petersburg is about 21 times bigger than Boulder.

Boulder is approximately 70 sq km, while Saint Petersburg is approximately 1,439 sq km, making Saint Petersburg 1,967% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Saint Petersburg uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Saint Petersburg vs. Boulder

Flip Comparison · See true size
See Saint Petersburg on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 2.2 times more expensive than Saint Petersburg
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