Delaware is about 12 times smaller than West Virginia.

West Virginia is approximately 62,361 sq km, while Delaware is approximately 5,060 sq km, making Delaware 8.11% the size of West Virginia. Meanwhile, the population of West Virginia is ~1.9 million people (955,060 fewer people live in Delaware).
Tip: This to-scale comparison of West Virginia vs. Delaware uses the Mercator projection, which distorts the size of regions near the poles.