Maine is about 72 times bigger than Hong Kong.

Hong Kong is approximately 1,108 sq km, while Maine is approximately 79,931 sq km, making Maine 7,114% larger than Hong Kong. Meanwhile, the population of Hong Kong is ~7.3 million people (5.9 million fewer people live in Maine).
Tip: This to-scale comparison of Hong Kong vs. Maine uses the Mercator projection, which distorts the size of regions near the poles.