North Dakota is about 1.2 times smaller than Utah.

Utah is approximately 212,751 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 83.97% the size of Utah. Meanwhile, the population of Utah is ~2.8 million people (2.1 million fewer people live in North Dakota).
Tip: This to-scale comparison of Utah vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.