West Virginia is about 2.9 times smaller than Cambodia.

Cambodia is approximately 181,035 sq km, while West Virginia is approximately 62,361 sq km, making West Virginia 34.45% the size of Cambodia. Meanwhile, the population of Cambodia is ~16.7 million people (14.9 million fewer people live in West Virginia).
Tip: This to-scale comparison of Cambodia vs. West Virginia uses the Mercator projection, which distorts the size of regions near the poles.