City size comparison

compared to

Boulder is around the same size as Santa Ana.

Santa Ana (map shows its 60 named neighbourhoods; the area covers the whole city) is approximately 71 sq km, while Boulder is approximately 70 sq km, making Boulder 98.18% the size of Santa Ana.
Tip: This to-scale comparison of Santa Ana vs. Boulder uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boulder vs. Santa Ana

Flip Comparison · See true size
See Boulder on top of Santa Ana
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Cost of Living Comparison · 7 categories - 2026 data
Santa Ana is 4.6% more expensive than Boulder
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