Chicago is about 1.6 times smaller than Fort Worth.

Fort Worth (map shows its 16 named neighbourhoods; the area covers the whole city) is approximately 911 sq km, while Chicago is approximately 590 sq km, making Chicago 64.71% the size of Fort Worth.
Tip: This to-scale comparison of Fort Worth vs. Chicago uses the Mercator projection, which distorts the size of regions near the poles.
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