West Virginia is about 1.2 times bigger than Costa Rica.

Costa Rica is approximately 51,100 sq km, while West Virginia is approximately 62,361 sq km, making West Virginia 22% larger than Costa Rica. Meanwhile, the population of Costa Rica is ~5.2 million people (3.4 million fewer people live in West Virginia).
Tip: This to-scale comparison of Costa Rica vs. West Virginia uses the Mercator projection, which distorts the size of regions near the poles.