South Carolina is about 2.8 times bigger than Burundi.

Burundi is approximately 27,830 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 180% larger than Burundi. Meanwhile, the population of Burundi is ~12.7 million people (8.1 million fewer people live in South Carolina).
Tip: This to-scale comparison of Burundi vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles.