Newark is about 7 times smaller than New Orleans.

New Orleans is approximately 439 sq km, while Newark (map shows its 20 named neighbourhoods; the area covers the whole city) is approximately 63 sq km, making Newark 14.25% the size of New Orleans.
Tip: This to-scale comparison of New Orleans vs. Newark uses the Mercator projection, which distorts the size of regions near the poles.
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