North Dakota is about 161 times bigger than Hong Kong.

Hong Kong is approximately 1,108 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 16,023% larger than Hong Kong. Meanwhile, the population of Hong Kong is ~7.3 million people (6.6 million fewer people live in North Dakota).
Tip: This to-scale comparison of Hong Kong vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.