Bosnia and Herzegovina is about 1.2 times smaller than West Virginia.

West Virginia is approximately 62,361 sq km, while Bosnia and Herzegovina is approximately 51,197 sq km, making Bosnia and Herzegovina 82.1% the size of West Virginia. Meanwhile, the population of West Virginia is ~1.9 million people (2.0 million more people live in Bosnia and Herzegovina).
Tip: This to-scale comparison of West Virginia vs. Bosnia and Herzegovina uses the Mercator projection, which distorts the size of regions near the poles.