Las Vegas is around the same size as Mesa.

Mesa (map shows its 6 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, while Las Vegas (map shows its 26 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, making Las Vegas 0% larger than Mesa.
Tip: This to-scale comparison of Mesa vs. Las Vegas uses the Mercator projection, which distorts the size of regions near the poles.
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