City size comparison

compared to

Helena is about 8 times smaller than Philadelphia.

Philadelphia is approximately 348 sq km, while Helena (map shows its 6 named neighbourhoods; the area covers the whole city) is approximately 44 sq km, making Helena 12.78% the size of Philadelphia.
Tip: This to-scale comparison of Philadelphia vs. Helena uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Helena vs. Philadelphia

Flip Comparison · See true size
See Helena on top of Philadelphia
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Cost of Living Comparison · 7 categories - 2026 data
Philadelphia is 2.4% more expensive than Helena
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