Vermont is about 7 times smaller than North Dakota.

North Dakota is approximately 178,647 sq km, while Vermont is approximately 23,956 sq km, making Vermont 13.41% the size of North Dakota. Meanwhile, the population of North Dakota is ~672,591 people (46,850 fewer people live in Vermont).
Tip: This to-scale comparison of North Dakota vs. Vermont uses the Mercator projection, which distorts the size of regions near the poles.