Tempe is about 3.4 times smaller than Atlanta.

Atlanta (map shows its 114 named neighbourhoods; the area covers the whole city) is approximately 350 sq km, while Tempe (map shows its 64 named neighbourhoods; the area covers the whole city) is approximately 104 sq km, making Tempe 29.55% the size of Atlanta.
Tip: This to-scale comparison of Atlanta vs. Tempe uses the Mercator projection, which distorts the size of regions near the poles.
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