South Carolina is about 1.2 times bigger than Latvia.

Latvia is approximately 64,589 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 21% larger than Latvia. Meanwhile, the population of Latvia is ~1.8 million people (2.8 million more people live in South Carolina).
Tip: This to-scale comparison of Latvia vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles.