New Hampshire is about 21 times bigger than Hong Kong.

Hong Kong is approximately 1,108 sq km, while New Hampshire is approximately 23,227 sq km, making New Hampshire 1,996% larger than Hong Kong. Meanwhile, the population of Hong Kong is ~7.3 million people (6.0 million fewer people live in New Hampshire).
Tip: This to-scale comparison of Hong Kong vs. New Hampshire uses the Mercator projection, which distorts the size of regions near the poles.