City size comparison

compared to

Santa Ana is around the same size as Boulder.

Boulder is approximately 70 sq km, while Santa Ana (map shows its 60 named neighbourhoods; the area covers the whole city) is approximately 71 sq km, making Santa Ana 2% larger than Boulder.
Tip: This to-scale comparison of Boulder vs. Santa Ana uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Santa Ana vs. Boulder

Flip Comparison · See true size
See Santa Ana on top of Boulder
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Cost of Living Comparison · 7 categories - 2026 data
Boulder is 7.4% more expensive than Santa Ana
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