Vermont is about 10 times smaller than Wyoming.

Wyoming is approximately 251,489 sq km, while Vermont is approximately 23,956 sq km, making Vermont 9.53% the size of Wyoming. Meanwhile, the population of Wyoming is ~563,626 people (62,115 more people live in Vermont).
Tip: This to-scale comparison of Wyoming vs. Vermont uses the Mercator projection, which distorts the size of regions near the poles.