South Carolina is about 24 times smaller than Indonesia.

Indonesia is approximately 1,904,569 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 4.09% the size of Indonesia. Meanwhile, the population of Indonesia is ~277.3 million people (272.7 million fewer people live in South Carolina).
Tip: This to-scale comparison of Indonesia vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles.
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