Idaho is about 193 times bigger than Hong Kong.

Hong Kong is approximately 1,108 sq km, while Idaho is approximately 214,314 sq km, making Idaho 19,242% larger than Hong Kong. Meanwhile, the population of Hong Kong is ~7.3 million people (5.7 million fewer people live in Idaho).
Tip: This to-scale comparison of Hong Kong vs. Idaho uses the Mercator projection, which distorts the size of regions near the poles.