Jacksonville is about 1.3 times smaller than Cape Town.

Cape Town is approximately 2,455 sq km, while Jacksonville (map shows its 197 named neighbourhoods; the area covers the whole city) is approximately 1,935 sq km, making Jacksonville 78.84% the size of Cape Town.
Tip: This to-scale comparison of Cape Town vs. Jacksonville uses the Mercator projection, which distorts the size of regions near the poles.
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