Tempe is about 6 times smaller than Chicago.

Chicago is approximately 590 sq km, while Tempe (map shows its 64 named neighbourhoods; the area covers the whole city) is approximately 104 sq km, making Tempe 17.56% the size of Chicago.
Tip: This to-scale comparison of Chicago vs. Tempe uses the Mercator projection, which distorts the size of regions near the poles.
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