South Carolina is about 20 times bigger than Sydney.

Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 1,947% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles.
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