North Dakota is around the same size as Uruguay.

Uruguay is approximately 176,215 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 1% larger than Uruguay. Meanwhile, the population of Uruguay is ~3.4 million people (2.7 million fewer people live in North Dakota).
Tip: This to-scale comparison of Uruguay vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.