Detroit is around the same size as Las Vegas.

Las Vegas (map shows its 26 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, while Detroit (map shows its 92 named neighbourhoods; the area covers the whole city) is approximately 359 sq km, making Detroit 97.8% the size of Las Vegas.
Tip: This to-scale comparison of Las Vegas vs. Detroit uses the Mercator projection, which distorts the size of regions near the poles.
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