Jersey is about 672 times smaller than South Carolina.

South Carolina is approximately 77,983 sq km, while Jersey is approximately 116 sq km, making Jersey 0.15% the size of South Carolina. Meanwhile, the population of South Carolina is ~4.6 million people (4.5 million fewer people live in Jersey).
Tip: This to-scale comparison of South Carolina vs. Jersey uses the Mercator projection, which distorts the size of regions near the poles.