North Dakota is about 35 times bigger than Delaware.

Delaware is approximately 5,060 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 3,431% larger than Delaware. Meanwhile, the population of Delaware is ~897,934 people (225,343 fewer people live in North Dakota).
Tip: This to-scale comparison of Delaware vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.