City size comparison

compared to

Boulder is around the same size as Winterthur.

Winterthur is approximately 68 sq km, while Boulder is approximately 70 sq km, making Boulder 2% larger than Winterthur.
Tip: This to-scale comparison of Winterthur vs. Boulder uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boulder vs. Winterthur

Flip Comparison · See true size
See Boulder on top of Winterthur
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Cost of Living Comparison · 7 categories - 2026 data
Winterthur is 77.3% more expensive than Boulder
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