Hawaii is about 11 times smaller than North Dakota.

North Dakota is approximately 178,647 sq km, while Hawaii is approximately 16,635 sq km, making Hawaii 9.31% the size of North Dakota. Meanwhile, the population of North Dakota is ~672,591 people (687,710 more people live in Hawaii).
Tip: This to-scale comparison of North Dakota vs. Hawaii uses the Mercator projection, which distorts the size of regions near the poles.