Milwaukee is about 4.9 times smaller than Nashville.

Nashville (map shows its 91 named neighbourhoods; the area covers the whole city) is approximately 1,232 sq km, while Milwaukee is approximately 249 sq km, making Milwaukee 20.22% the size of Nashville.
Tip: This to-scale comparison of Nashville vs. Milwaukee uses the Mercator projection, which distorts the size of regions near the poles.
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